Altered Beast

Altered Beast (Arcade, 1988) has an official source code release, milkeybabes/Altered-Beast, and 3 other public projects, including a full disassembly. An agent environment already wraps it.

Data checked 2026-10-12 · unbaked registry

Projects

Altered-Beast

Source release53 starspushed 2019-05-19no license

Source code for Altered Beast on the C64

6502 source: ORIGINAL

smd_alteredbeast

Disassemblysega2asm (Go) splitter4 starspushed 2025-01-29no license

Disassembly of Sega Genesis game Altered Beast

Disassembly via hansbonini's sega2asm tool

mikeybabes/alteredbeast

Disassembly68000 + Python graphics tools1 starspushed 2025-06-22no license

Altered Beast Arcade Game Disassembly

Disassembly + graphics regeneration scripts

Altered Beast

Source release

Wikipedia: source-available (non-OSI license and/or partial SDK code); source released 2019 by/for Software Studios. On May 19, 2019, Michael J. Archer uploaded the source code for the Commodore 64 conversion of the game to GitHub.

What you need

You need your own copy of the game: these projects ship code only.

Agent environments

stable-retro (Farama-Foundation/Stable-Retro) AlteredBeast-Genesis

More on Arcade

GameMethodYearStarsLast push

ARCStreet Fighter II: Champion EditionAgent environment19926.5k2025-04-13 ARCOut RunSource releaseReimplementation+219868802026-10-11 ARCDefenderSource releaseStatic recomp+219816432026-07-20 ARCSpace InvadersReimplementationDisassembly19787982022-09-18 ARCPac-ManSource releaseMatching decomp+519805942026-10-10 ARCOmega RaceSource releaseAI-assisted decomp+119815142026-09-17 ARCWizard of WorSource releaseDisassembly19805142026-09-20 ARCOutRunReimplementation19868802023-12-26

Found via realdmx/retrore, hansbonini/smd_alteredbeast, en.wikipedia.org/wiki/List_of_commercial_video_g

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.