Some of the assets used in the making of the HD graphics for the MegaMod are pulled from the internet and modified.
This is the list of the those assets along with their authors, licenses (when applicable), and the websites in which I obtained them

Use Case                            - Author         - License          -> Website

Androsynth Blazer fireball          - Viktor Zahn    - CC BY 4.0        -> https://opengameart.org/content/spell-animation-spritesheets
Androsynth bubble weapon            - Robert Brooks  - Custom           -> https://www.gamedeveloperstudio.com/graphics/viewgraphic.php?page-name=Bubble-popping-animation&item=1u5l0o9z5m3s6b612j
BIO. SCAN DNA strands               - John           - Custom           -> https://grabcad.com/library/twisted-wire
BIO. SCAN fleshy bits               - itchylot       - Unknown          -> https://imgur.com/jhW2kKA
ENERGY SCAN tesla tower             - Ashley Aslett  - CC BY 4.0        -> https://sketchfab.com/3d-models/red-alert-tesla-coil-4bd324a642184dbe8741acd34c8854d2
MIN. SCAN crystals                  - 588ku          - Custom           -> https://pngtree.com/freepng/red-diamond-ring-gems-illustration_4624669.html
CARGO crystals                      - Freepik        - Custom           -> https://www.flaticon.com/free-icon/crystal_815883
CONVERSE microphone                 - oksmith        - Public Domain    -> https://openclipart.org/detail/313772/music-microphone-logo
COMBAT/CYBORG pilot wings           - Lazar Nikolic  - CC BY 3.0        -> https://thenounproject.com/term/pilot-wings/557165/
COMBAT/HUMAN fist                   - Freepik        - Custom           -> https://www.freepik.com/free-vector/multiracial-raised-fists_8702826.htm
DEVICES fist                        - Freepik        - Custom           -> https://www.freepik.com/free-vector/multiracial-raised-fists_8702826.htm
DEVICES trident                     - upklyak        - Custom           -> https://www.freepik.com/free-vector/gold-silver-bronze-trident-devil-pitchfork-with-emeralds-isolated-white_15342111.htm
FIGHT! fist                         - Freepik        - Custom           -> https://www.freepik.com/free-vector/multiracial-raised-fists_8702826.htm
FIGHT! "pow"                        - Viscious-Speed - Public Domain    -> https://openclipart.org/detail/122959/pow
READING eye balls                   - OgreofWart     - CC0              -> https://opengameart.org/content/eyballs
READING open book                   - Quuraca        - Custom           -> https://www.cleanpng.com/png-open-book-png-image-31227/
ROSTER clipboard                    - Freepik        - Custom           -> https://www.freepik.com/free-vector/giant-check-list_4019709.htm
SAVE/LOAD/GAME SuperSOT-6 (chip)    - Alex Fedorov   - Custom           -> https://grabcad.com/library/ic-smd-1
Mmrnmhrm torpedoes                  - Juhele         - Public Domain    -> https://openclipart.org/detail/312920/artillery-projectile-grenade
Yehat main weapon projectiles       - Cethiel        - Public Domain    -> https://opengameart.org/content/fireball-effect
Game controller buttons             - Xelu           - CC0              -> https://thoseawesomeguys.com/prompts/
Various "ball shading" texture      - bravebug       - Public Domain    -> https://openclipart.org/detail/161287/metal-sphere
Setup Menu and Solar System nebulae - wwwtyro        - Public Domain    -> https://serosis.net/forks/space2d/
Lander Shield lightning bolt        - GDJ            - Public Domain    -> https://openclipart.org/detail/280505/stylized-lightning-bolt
Lander Shield flame                 - valessiobrito  - Public Domain    -> https://openclipart.org/detail/876/fire-june-holidays
Lander Shield "shield shape"        - rhysfaber      - Public Domain    -> https://openclipart.org/detail/2550/basic-shield
Lava Hazard flame animation         - BryanDerksen   - None?            -> http://www.datoolset.net/wiki/File:Fx_flamefb01_rescaled.png