---
title: Preparing your modpack
---

# Preparing Your Modpack

## Overview

Cleanroom Loader is compatible with the vast majority of Forge mods and will usually run them without issue.<br>
However, some mods remain **deprecated, redundant, or outright incompatible**—either because they’ve been superseded by better alternatives or because they introduce critical problems.<br>
To prepare your modpack for Cleanroom Loader, review the lists below and make replacements where necessary.

::: info Note {id="note"}
Pro tip: if you seek to automate this process, you can build/update your pack using the [Barebones Template](https://www.curseforge.com/minecraft/modpacks/barebones-template-cleanroom), which is a minimalist optimization template. It includes PackCompanion, a runtime analysis tool that scans your actual modlist and generates a personalized report flagging problematic or deprecated mods, complete with custom scripts to cleanly remove them from your instance.
:::
## Incompatible / Problematic Mods on Cleanroom Launcher

| Mod                       | Reason                                                      | Action                                                                                                                                                                                                      |
|---------------------------|-------------------------------------------------------------|:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **AdvancedShader**        | Binary patching, incompatible.                              | :no_entry_sign: Remove                                                                                                                                                                                      |
| **Essential.gg**          | Patched but causes many issues.                             | :white_check_mark: Use **[Lan UPNP](https://www.curseforge.com/minecraft/mc-mods/lan-upnp)** (Non-Proxy option) or **[E4MC Retro](https://www.curseforge.com/minecraft/mc-mods/e4mc-retro)** (Proxy Option) |
| **FoamFix**               | Outdated and prone to cause issues in Cleanroom Environment | :white_check_mark: Use **[VintageFix](https://www.curseforge.com/minecraft/mc-mods/vintagefix)**                                                                                                            |
| **Mouse Tweaks**          | Outdated and prone to cause issues                          | :white_check_mark: Use **[Mouse Tweaks Unofficial](https://www.curseforge.com/minecraft/mc-mods/mouse-tweaks-unofficial)**                                                                                  |
| **Phosphor**              | Incompatible                                                | :white_check_mark: Use **[Alfheim Lighting Engine](https://www.curseforge.com/minecraft/mc-mods/alfheim-lighting-engine)** / **[Hesperus](https://www.curseforge.com/minecraft/mc-mods/hesperus)**          |
| **Polyfrost series**      | Awaiting official fixes.                                    | —                                                                                                                                                                                                           |
| **Raw Input**             | Already included in Cleanroom.                              | :no_entry_sign: Remove                                                                                                                                                                                      |
| **Secret Rooms**          | Has an issue with updater                                   | :no_entry_sign: Disable the update checker in config file                                                                                                                                                   |
| **SerializationIsBad**    | Redundant. Modern Java versions fix the issue this solves   | :no_entry_sign: Remove                                                                                                                                                                                      |
| **TexFix**                | Merged and rewritten in Chibi                               | :white_check_mark: Use **[Chibi](https://www.curseforge.com/minecraft/mc-mods/chibi)**                                                                                                                      |
| **VanillaFix**            | Merged and improved in Chibi                                | :white_check_mark: Use **[Chibi](https://www.curseforge.com/minecraft/mc-mods/chibi)**                                                                                                                      |
| **Sound Physics**         | ASM incompat                                                | :white_check_mark: Use **[Sound Physics Remixin](https://www.curseforge.com/minecraft/mc-mods/sound-physics-remixin)**                                                                                      |
| **Custom Loading Screen** | Incompat with new GSON                                      | :white_check_mark: Use the build from **[this issue page](https://github.com/AlexIIL/CustomLoadingScreen/issues/84)**                                                                                       |
| **UltimateStack**         | ASM incompat                                                | :white_check_mark: **[StackUp!](https://www.curseforge.com/minecraft/mc-mods/stackup)** should replace it in most cases.                                                                                    |
| **The One Probe**         | Unmaintained                                                | :white_check_mark: Recommends **[The One Probe Community Edition](https://www.curseforge.com/minecraft/mc-mods/the-one-probe-community-edition)**                                                           |
| **Baubles**               | Unmaintained                                                | :white_check_mark: Recommends **[Bubbles](https://www.curseforge.com/minecraft/mc-mods/bubbles-a-baubles-fork)**                                                                                            |
| **Shadowfacts' Forgelin** | Unmaintained                                                | :white_check_mark: Replaced by **[Forgelin-Continuous](https://www.curseforge.com/minecraft/mc-mods/forgelin-continuous)**                                                                                  |

::: warning {id="warning"}
If your modpack uses **Bansoukou 4**, make sure to **run the instance at least once** before installing cleanroom loader so its patches are applied.
:::

## Performance / Memory optimization mods

The most important optimization mods for **Minecraft 1.12.2** can be summed up to the following list:
- **[Chibi](https://www.curseforge.com/minecraft/mc-mods/chibi)**: Huge optimizations that are targeted at Minecraft 1.12.2.
- **[VintageFix](https://www.curseforge.com/minecraft/mc-mods/vintagefix)**: Load time and RAM use improvements for Minecraft 1.12.2.
- **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**: A community project to consolidate various bugfixes and tweaks into a single solution for Minecraft 1.12.2.
- **[Stellar Core](https://www.curseforge.com/minecraft/mc-mods/stellarcore)**: Provides extensive bug fixes, performance improvements, and additional features across a wide range of mods.
- **[Gnetum](https://www.curseforge.com/minecraft/mc-mods/gnetum)**: Improves performance by distributing HUD updates over multiple frames. <br/>(May experience a few bugs, please report them [Here](https://github.com/decce6/Gnetum/issues).)
- **[Fixeroo](https://www.curseforge.com/minecraft/mc-mods/xp-orb-clump)**: Bundles bugfixes and XP orb optimizations.
- **[Alfheim Lighting Engine](https://www.curseforge.com/minecraft/mc-mods/alfheim-lighting-engine)**: Lighting engine replacement for Minecraft, optimized for performance and fixing many bugs.

::: info Note {id="note"}
Universal Tweaks supersedes a lot of mods which will be mostly not mentioned here. This can be observed via an in-game warning or by looking at the incompatible mods list [**Here**](https://legacy.curseforge.com/minecraft/mc-mods/universal-tweaks/files/6953147).
:::

## Render optimization mods

The most prominent Render optimization mods for **Minecraft 1.12.2** are:

- **[Optifine](https://optifine.net/adloadx?f=preview_OptiFine_1.12.2_HD_U_G6_pre1.jar&x=c2f6)** (Consider pairing it with [OptiNotFine](https://www.curseforge.com/minecraft/mc-mods/optinotfine))
- **[Celeritas](https://github.com/kappa-maintainer/Celeritas-auto-build/releases)** (Requires **_Cleanroom Loader_**, if used with Chibi, use Chibi 5.30+)
- **[Nothirium](https://www.curseforge.com/minecraft/mc-mods/nothirium)** (Also requires **[Naughthirium](https://www.curseforge.com/minecraft/mc-mods/naughthirium)**)

::: info Note {id="note"}
**_Celeritas_** and **_Nothirium_** do decrease ram usage and footprint, while **_OptiFine_** may increase ram usage and will lengthen load times.
:::

### Stress Test Results

In a simulated heavy-base scenario, we benchmarked the aforementioned mods against each other, and therefore rank their performance according to which gpu is used:
- **NVIDIA GPUs** → `Nothirium > Optifine > Celeritas`
- **AMD GPUs** → `Celeritas > Optifine > Nothirium`
- **Intel Integrated Graphics** → `Nothirium > Optifine > Celeritas`

::: info Note {id="note"}
Performance varies depending on your hardware and drivers. Test all three mods to see which provides the best results for your system.
:::

## MCreator and AI Generated Mods

Old and new 1.12.2 mods made with MCreator are highly not recommended for use no matter what kind of mod it is. MCreator in 1.12.2 is no longer officially supported and mods created with it have significant issues that will impact your game, such as unoptimized code, hardcoded IDs, NBT data breakage, and difficulty to debug the generated code. You can use [Crash assistant](https://www.curseforge.com/minecraft/mc-mods/crash-assistant) or [MCreatorDetector](https://github.com/darklysteamgear/mcreatorDetector) if you want a quick way of finding out which mods are MCreator.

Mods that were created entirely using generated code from AI (rather than as a learning tool) are also highly not recommended, the mod's code will be highly varied in quality (often poor), it can also be either prone to crashes or downright placebos, especially if it is a performance related mod.

::: info Note {id="note"}
If you're new to mod creation and want to start making a mod, we highly recommend creating the mod from scratch instead to avoid complications with learning.<br>You can join our [discord server](https://discord.gg/f2K4aSpG4F) to receive support when starting your modding journey. 
:::


## Superseded mods

::: info Note {id="note"}
These mods are not necessarily incompatible with Cleanroom loader, but have been superseded by newer forks and mods or do not present any benefit, so we recommend the following actions.
For forks not listed below, keep in mind that not all of them are beneficial. Some forks introduce extra bugs that were not in the original mod, some were forked mostly for a specific modpack's benefit and some were forked due to internal conflicts with the original mod's developers. Use those forks at your own discretion.
:::

### Library Mods

| Mod                                           | Reason                                                                                                                                                                                                                                                                                                                                                                                    | Recommended Action                                                                                                                                                                                                                                                                                                                                  |
|-----------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Baubles**                                   | Outdated                                                                                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Bubbles](https://www.curseforge.com/minecraft/mc-mods/bubbles-a-baubles-fork)** <br> <br> If incompatibilities occur, [report it here](https://github.com/CaliforniaDemise/Bubbles/issues) or revert to Baubles. **Use other Baubles or Bubbles forks not listed here at your own discretion as there are many of them!** |
| **Custom Mob Spawner**                        | Breaks mob spawns from almost every other mod. Salvaged features were merged into Mo' Creatures Extended and Universal Tweaks.                                                                                                                                                                                                                                                            | :no_entry_sign: Remove <br> <br> **Increased Spawn Caps**: <br> :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**                                                                                                                                                                        |
| **Forgelin**                                  | Outdated                                                                                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Forgelin-Continuous](https://www.curseforge.com/minecraft/mc-mods/forgelin-continuous)**                                                                                                                                                                                                                                  |
| **LibrarianLib**                              | Will not work correctly with Forgelin-Continuous.                                                                                                                                                                                                                                                                                                                                         | :white_check_mark: Use **[LibrarianLib-Continuous](https://www.curseforge.com/minecraft/mc-mods/librarianlib-continuous)** (May break Wizardry Animations, Revert to LibrarianLib + Forgelin if present)                                                                                                                                            |
| **MixinBootstrap**                            | Not Required with latest MixinBooter.                                                                                                                                                                                                                                                                                                                                                     | :no_entry_sign: Remove                                                                                                                                                                                                                                                                                                                              |
| **Mixin 0.7-0.8 Compatibility (MixinCompat)** | Not Required with latest MixinBooter.                                                                                                                                                                                                                                                                                                                                                     | :no_entry_sign: Remove                                                                                                                                                                                                                                                                                                                              |
| **OpenModsLib**                               | Merged into OpenBlocks Reopened, no other mods require it.                                                                                                                                                                                                                                                                                                                                | :white_check_mark: Use **[OpenBlocks Reopened](https://www.curseforge.com/minecraft/mc-mods/openblocks-reopened)**                                                                                                                                                                                                                                  |
| **Patchouli**                                 | Outdated                                                                                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Patchouli ROFL Edition](https://www.curseforge.com/minecraft/mc-mods/patchouli-rofl-edition)** <br> <br> If incompatibilities occur, revert to Patchouli.                                                                                                                                                                 |                                                                                                                                          

### Content Mods

| Mod                                                          | Reason                                                                                                                                                                                                                              | Recommended Action                                                                                                                                                                                                 |
|--------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **AcademyCraft**                                             | Abandoned                                                                                                                                                                                                                           | :white_check_mark: Use **[Academycraft UES](https://github.com/yor42/AcademyCraft/releases)**                                                                                                                      |
| **Advanced Rocketry**                                        | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Advanced Rocketry - Reworked](https://www.curseforge.com/minecraft/mc-mods/advanced-rocketry-2)**                                                                                        |
| **Aether II**                                                | Gets packaged with Phosphor which breaks compatibility with Alfheim Lighting Engine and Hesperus.                                                                                                                                   | :white_check_mark: Use **[Aether II: Phosphor Not Included](https://www.curseforge.com/minecraft/mc-mods/the-aether-ii-phosphor-not-included)**                                                                    |
| **Aetherium Ashen Armor**                                    | Merged into Aetherworks Unofficial Extended Life.                                                                                                                                                                                   | :white_check_mark: Use **[Aetherworks Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/aetherworks-extended-life)**                                                                          |AcademyCraft
| **Aetherworks**                                              | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Aetherworks Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/aetherworks-extended-life)**                                                                          |
| **Alchemistry**                                              | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Alchemistry - Redox](https://www.curseforge.com/minecraft/mc-mods/alchemistry-redox)**                                                                                                   |
| **Applied Energistics 2**                                    | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[AE2 Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/ae2-extended-life)**                                                                                          |
| **Avaritia 1.1x / Avaritia 1.1x Kedition**                   | **Avaritia 1.1x**: Outdated <br> <br> **Avaritia 1.1x Kedition**: Alternate fork that mainly adds mod integration. Avaritia 1.1x Unofficial Extended Life has more content and fixes while most of the mod integration is retained. | :white_check_mark: Use **[Avaritia 1.1x Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/avaritia-1-1x-unofficial)**                                                                         |
| **Better Questing**                                          | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Better Questing Unofficial](https://www.curseforge.com/minecraft/mc-mods/better-questing-unofficial)**                                                                                   |
| **Better Questing - Quest Book / Better Questing Triggerer** | Rewritten implementation in Better Questing Unofficial.                                                                                                                                                                             | :white_check_mark: Use **[Better Questing Unofficial](https://www.curseforge.com/minecraft/mc-mods/better-questing-unofficial)**                                                                                   |
| **Better Questing - Standard Expansion**                     | Merged into Better Questing Unofficial.                                                                                                                                                                                             | :white_check_mark: Use **[Better Questing Unofficial](https://www.curseforge.com/minecraft/mc-mods/better-questing-unofficial)**                                                                                   |
| **Binnie's Mods**                                            | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Binnie's Mods Patched](https://www.curseforge.com/minecraft/mc-mods/binnies-mods-patched)**                                                                                              |
| **BitHop**                                                   | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[QBitHop](https://www.curseforge.com/minecraft/mc-mods/qbithop)**                                                                                                                         |
| **Bloodmoon**                                                | Has performance issues, the event lighting is not compatible with OptiFine without unofficial patches. Hyxcate's event lighting is compatible with OptiFine without requiring any patches and is more performant.                   | :white_check_mark: Use **[Hyxcate](https://www.curseforge.com/minecraft/mc-mods/hyxcate)**                                                                                                                         |
| **Classic Bars**                                             | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Classic Bars Legacy](https://www.curseforge.com/minecraft/mc-mods/classic-bar-legacy)**                                                                                                  |
| **Crimson Revelations**                                      | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[New Crimson Revelations](https://www.curseforge.com/minecraft/mc-mods/new-crimson-revelations)**                                                                                         |
| **Davinci's Vessels**                                        | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Valkyrien Skies](https://www.curseforge.com/minecraft/mc-mods/valkyrien-skies)**                                                                                                         |
| **Deadly Monsters**                                          | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Deadly Monsters Patched](https://www.curseforge.com/minecraft/mc-mods/deadly-monsters-patched)**                                                                                         |
| **Dynamic Trees**                                            | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Dramatic Trees](https://www.curseforge.com/minecraft/mc-mods/dramatictrees)**                                                                                                            |
| **Earthworks**                                               | Outdated and marked as abandoned by CurseForge,                                                                                                                                                                                     | :white_check_mark: Use **[Earthworks Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/earthworks-extended-life)**                                                                            |
| **Embers / Embers Rekindled**                                | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Embers Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/embers-extended-life)** <br> <br> If incompatibilities occur, revert to Embers Rekindled.                  |
| **Engineered Golems**                                        | Merged into Congrega Mystica with bugs fixed.                                                                                                                                                                                       | :white_check_mark: Use **[Congrega Mystica](https://www.curseforge.com/minecraft/mc-mods/congrega-mystica)**                                                                                                       |
| **Expanded Arcanum**                                         | Merged into Congrega Mystica with bugs fixed.                                                                                                                                                                                       | :white_check_mark: Use **[Congrega Mystica](https://www.curseforge.com/minecraft/mc-mods/congrega-mystica)**                                                                                                       |
| **Mekanism**                                                 | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Mekanism-CE-Unofficial](https://www.curseforge.com/minecraft/mc-mods/mekanism-ce-unofficial)** or [Mekanism Community Edition](https://www.curseforge.com/minecraft/mc-mods/mekanism-ce) |
| **MmmMmmMmmMmm (Target Dummy)**                              | The mod was rewritten entirely. Versions 2.0.0 and above have more issues and are generally more unstable compared to the original 1.14 version.                                                                                    | :white_check_mark: Use **[MmmMmmMmmMmm 1.14](https://www.curseforge.com/minecraft/mc-mods/mmmmmmmmmmmm/files/2503041)**                                                                                            |
| **Mo' Creatures**                                            | Outdated, requires Custom Mob Spawner and has numerous gamebreaking bugs.                                                                                                                                                           | :white_check_mark: Use **[Mo' Creatures Extended](https://www.curseforge.com/minecraft/mc-mods/mo-creatures-extended)**                                                                                            |
| **Modular Machinery**                                        | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Modular Machinery: Community Edition](https://www.curseforge.com/minecraft/mc-mods/modularmachinery-community-edition)**                                                                 |
| **MrCrayfish's Furniture Mod (Legacy)**                      | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[MrCrayfish's Furniture Mod Rebuilt](https://www.curseforge.com/minecraft/mc-mods/mrcrayfish-furniture-mod-rebuilt)**                                                                     |
| **Mutant Beasts**                                            | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Mutant Creatures Legacy](https://www.curseforge.com/minecraft/mc-mods/mutant-creatures-legacy)**                                                                                         |
| **Natura**                                                   | Outdated, impacts performance.                                                                                                                                                                                                      | :white_check_mark: Use **[Natura Legacy](https://www.curseforge.com/minecraft/mc-mods/natura-legacy)**                                                                                                             |
| **Nature's Aura**                                            | Outdated, impacts performance.                                                                                                                                                                                                      | :white_check_mark: Use **[Nature's Aura Simplified](https://www.curseforge.com/minecraft/mc-mods/natures-aura-simplified)**                                                                                        |
| **Nyx / Nyx: RotN Edition / Xyn**                            | **Nyx**: Outdated <br> <br> **Nyx: RotN Edition / Xyn**: Forks of Nyx with minor differences.                                                                                                                                       | :white_check_mark: Use **[Hyxcate](https://www.curseforge.com/minecraft/mc-mods/hyxcate)**                                                                                                                         |
| **Oh The Biomes You'll Go / Biomes You'll Go Fixed**         | MCreator and has lots of bugs (unlike versions past 1.12.2). Use another biomes mod instead.                                                                                                                                        | :no_entry_sign: Remove                                                                                                                                                                                             |
| **OpenBlocks**                                               | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[OpenBlocks Reopened](https://www.curseforge.com/minecraft/mc-mods/openblocks-reopened)**                                                                                                 |
| **Pillar**                                                   | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Pillar Patched](https://www.curseforge.com/minecraft/mc-mods/pillar-patched)**                                                                                                           |
| **Railcraft (Release version)**                              | The mod is abandoned and the latest beta version has more bugfixes.                                                                                                                                                                 | :white_check_mark: Use **[Railcraft Beta](https://www.curseforge.com/minecraft/mc-mods/railcraft/files/3853491)**                                                                                                  |
| **Random Things**                                            | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Quantum Things](https://www.curseforge.com/minecraft/mc-mods/quantum-things)**                                                                                                           |
| **RPGLoot**                                                  | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[RPGLoot Patched](https://www.curseforge.com/minecraft/mc-mods/rpgloot-patched)**                                                                                                         |
| **Rustic Thaumaturgy**                                       | Merged into Congrega Mystica with bugs fixed.                                                                                                                                                                                       | :white_check_mark: Use **[Congrega Mystica](https://www.curseforge.com/minecraft/mc-mods/congrega-mystica)**                                                                                                       |
| **Seared Ladder (Backport)**                                 | Merged into Tinkers' Antique.                                                                                                                                                                                                       | :white_check_mark: Use **[Tinkers' Antique](https://www.curseforge.com/minecraft/mc-mods/tinkers-antique)**                                                                                                        |
| **Soot**                                                     | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Soot Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/soot-extended-life)**                                                                                        |
| **Soul Shards Respawn**                                      | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Soul Shards Respawn Patched](https://www.curseforge.com/minecraft/mc-mods/soul-shards-respawn-patched)**                                                                                 |
| **Straw Golem**                                              | Outdated and no longer available in CurseForge.                                                                                                                                                                                     | :white_check_mark: Use **[Straw Golem Unofficial Extended Life](https://www.curseforge.com/minecraft/mc-mods/strawgolem-extended-life)**                                                                           |
| **Techguns**                                                 | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Techguns-CE](https://www.curseforge.com/minecraft/mc-mods/techguns-ce)**                                                                                                                 |
| **Thaumic Wonders / Thaumic Konders**                        | **Thaumic Wonders**: Outdated <br> <br> **Thaumic Konders**: Alternate fork with minor fixes and some model changes. Formerly a reupload of a very early version of Thaumic Wonders Unofficial (New Wonderology).                   | :white_check_mark: Use **[Thaumic Wonders Unofficial](https://www.curseforge.com/minecraft/mc-mods/thaumic-wonders-unofficial)**                                                                                   |
| **Thicc Entities**                                           | Outdated, notably crashes with Aqua Acrobatics.                                                                                                                                                                                     | :white_check_mark: Use **[Entifier](https://www.curseforge.com/minecraft/mc-mods/entifier)**                                                                                                                       |
| **Tinkers' Arsenal**                                         | Outdated and no longer available in CurseForge.                                                                                                                                                                                     | :white_check_mark: Use **[Tinkers' Arsenal Reloaded](https://www.curseforge.com/minecraft/mc-mods/tinkers-arsenal-reloaded)**                                                                                      |
| **Tinkers' Construct**                                       | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Tinkers' Antique](https://www.curseforge.com/minecraft/mc-mods/tinkers-antique)**                                                                                                        |
| **Tough Expansion**                                          | Has a RCE exploit.                                                                                                                                                                                                                  | :white_check_mark: Use **[Survival Tools](https://www.curseforge.com/minecraft/mc-mods/survival-tools)**                                                                                                           |
| **Twilight Forest**                                          | Outdated                                                                                                                                                                                                                            | :white_check_mark: Use **[Twilight Forest: Deforestation Edition](https://www.curseforge.com/minecraft/mc-mods/the-twilight-forest-deforestation-edition)**                                                        |
| **Wizardry**                                                 | Latest version causes incompats.                                                                                                                                                                                                    | :white_check_mark: Use **[Wizardry 0.11.1](https://www.curseforge.com/minecraft/mc-mods/wizardry-mod/files/3045584)**                                                                                              |

### Performance Mods

| Mod                                                 | Reason                                                                                                                                                                                                                                                                                                                                                                              | Recommended Action                                                                                           |
|-----------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------|
| **!!Pigium - Performance**                          | Not a legitimate performance mod. It was made to bait users for a YouTube video.                                                                                                                                                                                                                                                                                                    | :no_entry_sign: Remove                                                                                       |
| **Better Biome Blend** / **Betterer Biome Blender** | **Better Biome Blend**: Does not provide any meaningful performance improvements or fixes. <br> <br> **Betterer Biome Blender**: Fork of Better Biome Blend with minor fixes and mixins embedded. <br> The mod's file size is greatly increased (36.77 KB → 1021.33 KB) due to the embedded mixins.                                                                                 | :no_entry_sign: Remove                                                                                       |
| **BetterFPS**                                       | Outdated and breaks core functionality.                                                                                                                                                                                                                                                                                                                                             | :no_entry_sign: Remove                                                                                       |
| **Clumps**                                          | Outdated                                                                                                                                                                                                                                                                                                                                                                            | :white_check_mark: Use **[Fixeroo](https://www.curseforge.com/minecraft/mc-mods/xp-orb-clump)**              |
| **Farsight**                                        | Does almost nothing except move `unloadChunk` from `ChunkProviderClient` to `tick`, caches chunk indefinitely, which might impact RAM usage.                                                                                                                                                                                                                                        | :no_entry_sign: Remove                                                                                       |
| **FastFurnace**                                     | Merged and rewritten in Chibi.                                                                                                                                                                                                                                                                                                                                                      | :white_check_mark: Use **[Chibi](https://www.curseforge.com/minecraft/mc-mods/chibi)**                       |
| **FastWorkbench**                                   | Merged and rewritten in Universal Tweaks.                                                                                                                                                                                                                                                                                                                                           | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)** |
| **FermiumASM / BlahajASM**                          | **FermiumASM**: Fork of NormalASM that disables fixes with Dynamic Trees and changes the MixinBooter dependency to use FermiumBooter instead. <br> <br> **BlahajASM**: Fork of FermiumASM that reverts the FermiumBooter dependency change. <br> <br>  As well as all of them being slow to sync to upstream, it is overall not recommended to use any of the **many** Chibi forks. | :white_check_mark: Use **[Chibi](https://www.curseforge.com/minecraft/mc-mods/chibi)**                       |
| **FPS Boost**                                       | Provides no benefit.                                                                                                                                                                                                                                                                                                                                                                | :no_entry_sign: Remove                                                                                       |
| **GPU Tape**                                        | Provides no benefit.                                                                                                                                                                                                                                                                                                                                                                | :no_entry_sign: Remove                                                                                       |
| **Multithreaded Noise**                             | Known to cause crashes, not recommended for use.                                                                                                                                                                                                                                                                                                                                    | :no_entry_sign: Remove                                                                                       |
| **Neonium**                                         | Outdated Vintagium fork, see [Render optimization mods](#render-optimization-mods).                                                                                                                                                                                                                                                                                                 | :no_entry_sign: Remove                                                                                       |
| **NormalASM**                                       | Outdated fork of Chibi with no meaningful changes outside of changing the package name and mod id. This makes it incompatible with anything depending on the original mod id or class names. <br> <br> As well as all of them being slow to sync to upstream, it is overall not recommended to use any of the **many** Chibi forks.                                                 | :white_check_mark: Use **[Chibi](https://www.curseforge.com/minecraft/mc-mods/chibi)**                       |
| **Performant**                                      | Empty jar that does nothing.                                                                                                                                                                                                                                                                                                                                                        | :no_entry_sign: Remove                                                                                       |
| **Redirectionor**                                   | Provides no real performance benefit.                                                                                                                                                                                                                                                                                                                                               | :no_entry_sign: Remove                                                                                       |
| **Relictium**                                       | Outdated Vintagium fork, see [Render optimization mods](#render-optimization-mods).                                                                                                                                                                                                                                                                                                 | :no_entry_sign: Remove                                                                                       |
| **Spark / Spark Unforged**                          | **Spark**: Outdated <br> <br> **Spark Unforged**: Backport of modern Spark with half of the features removed.                                                                                                                                                                                                                                                                       | :white_check_mark: Use **[Flare](https://www.curseforge.com/minecraft/mc-mods/flare)**                       |
| **Surge**                                           | Uses deprecated methods, does not improve performance at all. Salvaged features are now in Universal Tweaks.                                                                                                                                                                                                                                                                        | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)** |

### QoL Mods

| Mod                                            | Reason                                                                                                                                                                                                                                                                                                                    | Recommended Action                                                                                                                                                                                                                                                                                                                                                   |
|------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **AppleSkin**                                  | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[LemonSkin](https://www.curseforge.com/minecraft/mc-mods/lemonskin)**                                                                                                                                                                                                                                                                       |
| **AttributeFix**                               | Merged and rewritten in Universal Tweaks.                                                                                                                                                                                                                                                                                 | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**                                                                                                                                                                                                                                                         |
| **Bed Patch**                                  | Fix already included in Forge / Cleanroom Loader, does nothing when installed.                                                                                                                                                                                                                                            | :no_entry_sign: Remove                                                                                                                                                                                                                                                                                                                                               |
| **Better Foliage** / **RLFoliage**             | **Better Foliage**: Performance heavy and known to cause incompatibility issues with certain mods including VintageFix. <br> <br> **RLFoliage**: Fork of Better Foliage that removes the "Round Logs" feature to slightly improve performance, as well as other minor changes. <br> <br> Neither are recommended for use. | :no_entry_sign: Remove                                                                                                                                                                                                                                                                                                                                               |
| **Born in a Barn**                             | Fix already included in Forge / Cleanroom Loader, does nothing when installed.                                                                                                                                                                                                                                            | :no_entry_sign: Remove                                                                                                                                                                                                                                                                                                                                               |
| **Crafting Tweaks**                            | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Crafting Tweaks Unofficial](https://www.curseforge.com/minecraft/mc-mods/crafting-tweaks-unofficial)**                                                                                                                                                                                                                                     |
| **DupeFix Project**                            | Incompatible with MixinBooter due to a hacky implementation. Universal Tweaks implements the same fixes while forks of the affected mods have already fixed the duplication bugs from their side.                                                                                                                         | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**                                                                                                                                                                                                                                                         |
| **Eigencraft Unofficial Patch / MUP**          | Lots of its fixes are now in Universal Tweaks while the lighting and redstone optimizations are not very compatible with other mods. Better alternatives already exist for lighting optimizations.                                                                                                                        | **Fixes**: <br> :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)** <br> <br> **Lighting Engine**: <br> :white_check_mark: Use **[Alfheim Lighting Engine](https://www.curseforge.com/minecraft/mc-mods/alfheim-lighting-engine)** or **[Hesperus](https://www.curseforge.com/minecraft/mc-mods/hesperus)** |
| **Fireproof Items**                            | Future Fireproof has a better implementation and API features.                                                                                                                                                                                                                                                            | :white_check_mark:                                                           Use **[Future Fireproof](https://www.curseforge.com/minecraft/mc-mods/future-fireproof)**                                                                                                                                                                                               |
| **Hot or Not**                                 | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Hot or Not Plus](https://www.curseforge.com/minecraft/mc-mods/hot-or-not-plus)**                                                                                                                                                                                                                                                           |
| **Immersive Craft**                            | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Immersive Craft Patched](https://www.curseforge.com/minecraft/mc-mods/immersive-craft-patched)**                                                                                                                                                                                                                                           |
| **Just Enough Characters**                     | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[Had Enough Characters](https://www.curseforge.com/minecraft/mc-mods/had-enough-characters)**                                                                                                                                                                                                                                               |
| **JustEnoughIDs (JEID) / NotEnoughIDs (NEID)** | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[RoughlyEnoughIDs (REID)](https://www.curseforge.com/minecraft/mc-mods/reid/files/6761278)**                                                                                                                                                                                                                                                |
| **JustEnoughItems (JEI)**                      | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[HadEnoughItems (HEI)](https://www.curseforge.com/minecraft/mc-mods/had-enough-items)**                                                                                                                                                                                                                                                     |
| **MiniEffects**                                | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[MiniEffects-Legacy Extended Life](https://www.curseforge.com/minecraft/mc-mods/minieffects-legacy-extended-life)**                                                                                                                                                                                                                         |
| **Mod Director**                               | Outdated and no longer available in CurseForge.                                                                                                                                                                                                                                                                           | :white_check_mark: Use **[FileDirector](https://www.curseforge.com/minecraft/mc-mods/filedirector)**                                                                                                                                                                                                                                                                 |
| **NetherPortalFix**                            | Rewritten implementation in Universal Tweaks.                                                                                                                                                                                                                                                                             | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**                                                                                                                                                                                                                                                         |
| **Paintings ++**                               | Complicated to setup and not very user friendly. It is recommended to use JSON Paintings and Painting Selection GUI together instead for a much better experience.                                                                                                                                                        | :white_check_mark: Use **[JSON Paintings](https://www.curseforge.com/minecraft/mc-mods/json-paintings)** and **[Painting Selection GUI](https://www.curseforge.com/minecraft/mc-mods/paintings/files/7156791)**                                                                                                                                                      |
| **RandomPatches**                              | Known to cause crashes with certain mods. Universal Tweaks has a good portion of its features.                                                                                                                                                                                                                            | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**                                                                                                                                                                                                                                                         |
| **RandomTweaks**                               | Known to cause crashes with certain mods. Universal Tweaks has a good portion of its features.                                                                                                                                                                                                                            | :white_check_mark: Use **[Universal Tweaks](https://www.curseforge.com/minecraft/mc-mods/universal-tweaks)**                                                                                                                                                                                                                                                         |
| **SmoothFont**                                 | Breaks some mods.                                                                                                                                                                                                                                                                                                         | :no_entry_sign: Remove                                                                                                                                                                                                                                                                                                                                               |
| **Thaumic Fixes**                              | Overwrites methods in one of Thaumcraft's classes to fix a single bug which will break compatibility with other mods trying to inject into the same class. Thaumcraft Fix has the same fix without overwriting.                                                                                                           | :white_check_mark: Use **[Thaumcraft Fix](https://www.curseforge.com/minecraft/mc-mods/thaumcraftfix)**                                                                                                                                                                                                                                                              |
| **Thaumic Meme**                               | ThaumicTweaker already has a similar research subtitles feature bundled in with a better implementation.                                                                                                                                                                                                                  | :white_check_mark: Use **[ThaumicTweaker](https://www.curseforge.com/minecraft/mc-mods/thaumictweaker)**                                                                                                                                                                                                                                                             |                                          
| **ThaumTweaks**                                | Overwrites methods in some of Thaumcraft's classes which breaks compatibility with other mods trying to inject into the same classes. ThaumicTweaker has most of the same features without overwriting.                                                                                                                   | :white_check_mark: Use **[ThaumicTweaker](https://www.curseforge.com/minecraft/mc-mods/thaumictweaker)**                                                                                                                                                                                                                                                             |
| **Tinker's JEI**                               | Tinkers' Antique already has full JEI support for materials. While both mods can still work together, it's overall recommended to remove it to not have duplicate features.                                                                                                                                               | :white_check_mark: Use **[Tinkers' Antique](https://www.curseforge.com/minecraft/mc-mods/tinkers-antique)**                                                                                                                                                                                                                                                          |                                                                                                 
| **Tips**                                       | Outdated                                                                                                                                                                                                                                                                                                                  | :white_check_mark: Use **[AnotherTips](https://www.curseforge.com/minecraft/mc-mods/anothertips)**                                                                                                                                                                                                                                                                   |

## Should Have

A list of companion mods to further improve your experience with other mods.

| Mod                               | Reason                                                  | Recommended Action                                                                                                                                                                                                                                                                                             |
|-----------------------------------|---------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **AtomicStryker's Battle Towers** | Has a good amount of bugs.                              | :white_check_mark: Add **[Battle Towers Fixes](https://www.curseforge.com/minecraft/mc-mods/btfixes)**                                                                                                                                                                                                         |
| **Balkon's WeaponMod: Legacy**    | Lack of mod integration.                                | :white_check_mark: Add **[Balkon's Expansion](https://www.curseforge.com/minecraft/mc-mods/balkons-expansion)**                                                                                                                                                                                                |
| **HadEnoughItems (HEI)**          | Some mods have overlapping issues with HEI's interface. | :white_check_mark: Add **[JEI Area Fixer](https://www.curseforge.com/minecraft/mc-mods/jei-area-fixer)**                                                                                                                                                                                                       |
| **IC2 EXP**                       | Has a good amount of bugs.                              | :white_check_mark: Add **[IC2 Patcher](https://www.curseforge.com/minecraft/mc-mods/ic2-patcher)**                                                                                                                                                                                                             |
| **Industrial Foregoing**          | Has a good amount of bugs.                              | :white_check_mark: Add **[IFPatcher](https://www.curseforge.com/minecraft/mc-mods/ifpatcher)**                                                                                                                                                                                                                 |
| **Just Enough Resources (JER)**   | Lack of mod integration.                                | :white_check_mark: Add **[Just Enough Magiculture](https://www.curseforge.com/minecraft/mc-mods/just-enough-magiculture)**                                                                                                                                                                                     |
| **Mowzie's Mobs**                 | Optional Baubles integration.                           | :white_check_mark: Add **[Mowzie's Mobs' Baubles](https://www.curseforge.com/minecraft/mc-mods/mowzies-mobs-baubles)** <br> <br> Make sure to use the [latest beta version of Mowzie's Mobs](https://www.curseforge.com/minecraft/mc-mods/mowzies-mobs/files/5218945) or it will crash!                        |
| **Patchouli ROFL Edition**        | Optional mod integration and quality of life.           | :white_check_mark: Add **[Patchouli Books](https://www.curseforge.com/minecraft/mc-mods/patchouli-books)**                                                                                                                                                                                                     |
| **Railcraft**                     | Has a good amount of bugs.                              | :white_check_mark: Add **[Railway Depot Worker](https://www.curseforge.com/minecraft/mc-mods/railway-depot-worker)**                                                                                                                                                                                           |
| **Thaumcraft 6**                  | Bugs and lack of mod integration.                       | :white_check_mark: Add **[Thaumcraft Fix](https://www.curseforge.com/minecraft/mc-mods/thaumcraftfix)** and **[ThaumicTweaker](https://www.curseforge.com/minecraft/mc-mods/thaumictweaker)** (Add **[Congrega Mystica](https://www.curseforge.com/minecraft/mc-mods/congrega-mystica)** for more integration) |
| **VoxelMap**                      | Has a good amount of bugs.                              | :white_check_mark: Add **[VoxelMap Fixes](https://www.curseforge.com/minecraft/mc-mods/voxelmap-fixes)**                                                                                                                                                                                                       |
| **Witchery: Resurrected**         | Base mod is not usable.                                 | :white_check_mark: Add **[Witchery: Companion](https://www.curseforge.com/minecraft/mc-mods/witchery-companion)**                                                                                                                                                                                              |

## Cleanroom Exclusive Mods

These mod replacements and companion mods are exclusive to Cleanroom because they rely on features from it or from modern Java versions, therefore **THEY WILL NOT WORK ON FORGE**.

| Mod                                         | Reason                                                                                                    | Recommended Action                                                                                                                                                                                                                                                                   |
|---------------------------------------------|-----------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| **Blockcraftery**                           | Outdated and has several bugs.                                                                            | :white_check_mark: Use **[Blockcraftery: Refurbished](https://www.curseforge.com/minecraft/mc-mods/blockcraftery-refurbished)**                                                                                                                                                      |
| **CodeChicken Lib**                         | Outdated and has several bugs.                                                                            | :white_check_mark: Use **[CodeChicken Lib CRE](https://www.curseforge.com/minecraft/mc-mods/codechicken-lib-cre)**                                                                                                                                                                   |
| **Charset**                                 | Outdated and has several bugs.                                                                            | :white_check_mark: Use **[Charset CRE](https://www.curseforge.com/minecraft/mc-mods/charset-cre)**                                                                                                                                                                                   |
| **Emojicord**                               | Outdated and has several bugs.                                                                            | :white_check_mark: Use **[Goslingcord](https://www.curseforge.com/minecraft/mc-mods/goslingcord)** <br> <br> If you still want to use Forge, use [version 2.0.0](https://www.curseforge.com/minecraft/mc-mods/goslingcord/files/6231916).                                            |
| **GeckoLib 3**                              | Outdated and has several bugs. SauriaLib remains compatible with existing mods that depend on GeckoLib 3. | :white_check_mark: Use **[SauriaLib](https://www.curseforge.com/minecraft/mc-mods/saurialib)**                                                                                                                                                                                       |
| **RandomPortals**                           | Does not work with Cleanroom Launcher and depends on RandomPatches.                                       | :white_check_mark: Use **[Clean Portals](https://www.curseforge.com/minecraft/mc-mods/clean-portals-randomportals-cleanroom-edition)**                                                                                                                                               |
| **Sound Filters / Sound Filters Continued** | Outdated                                                                                                  | :white_check_mark: Use **[籁/Sound Physics Remixin](https://www.curseforge.com/minecraft/mc-mods/sound-physics-remixin)**  <br> <br> If you still want to use Forge, use [version 1.1.15 or below](https://www.curseforge.com/minecraft/mc-mods/sound-physics-remixin/files/6723296). |