# Fall Line

> Top-list entry: **today** (#3), **this week** (#10).

![Fall Line screenshot](https://raw.githubusercontent.com/Nipale-ai/opus-5-5-overnight-builds/main/vorschau-fall-line.jpg)

## At a glance

- **Score:** 9.0/10
- **Screenshot rating:** 8.7/10 ([manually reviewed image](https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/vorschau-fall-line.jpg)). Treat this as visual review only; do not infer a playtest.
- **Model:** Claude Opus 5.5
- **Technology:** Three.js, JavaScript, WebGL, Browser
- **Estimated FP32 operations/s at 60 FPS:** 2,400,000,000 (low confidence; static estimate, not measured).
- **Rating basis:** A source-verified freeride game with a navigable mountain, route choices, tricks, timed scoring, and an online build; distinguish it from three non-game portfolio experiments.
- **Verified:** 2026-09-25
- **Repository:** [https://github.com/Nipale-ai/opus-5-5-overnight-builds](https://github.com/Nipale-ai/opus-5-5-overnight-builds)
- **Evidence:** [creator-reported model evidence](https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/README.md)
- **Live demo:** [open demo](https://nipale-ai.github.io/opus-5-5-overnight-builds/fall-line/)

## Screenshots

Use the source screenshot links below. The list records these assets from the game repository or a related source.

- [screenshot 1](https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/vorschau-fall-line.jpg) — 📸 8.7/10 · manual visual review · Use this frame for the game-level score. Show the rider mid-run, a broad mountain route, score and trick HUD, and speed indicator; the coherent snow scene gives clear gameplay context.

## Model attribution

Open the evidence link above. Evidence grade: **creator-reported model evidence**.

## Source description

Count Fall Line as the portfolio’s player-driven freeride snowboard/ski game. Exclude Operation Tidewater and Chrono City as interactive dioramas/simulations and Pirate Ship at Sunset as a one-action cinematic without a documented game objective. The repository README explicitly attributes the four overnight projects to Claude Opus 5.5. Inspect each portfolio section and count only Fall Line as an independent game; the other items are an animated voxel diorama, a city-through-time simulation, and a one-action cinematic. Review the Fall Line source preview as its best gameplay image.

### Gameplay source

- [https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/fall-line/index.html](https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/fall-line/index.html)
- [https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/README.md](https://github.com/Nipale-ai/opus-5-5-overnight-builds/blob/main/README.md)

## Verification notes

- **Status:** verified_source
- **Counted units in repository:** 1
- **Units covered by this note:** 1
- **Discovery:** GitHub repository search: "Claude Opus 5.5" game created:2026-09-23..2026-09-24 (checked 2026-09-25; UTC+07:00 date filter); https://github.com/theolundqvist/frontier-games

[Back to the awesome list](../../README.md)