The Catacomb Abyss
The Catacomb Abyss (DOS, 1992) has an official source code release, CatacombGames/CatacombAbyss.
Data checked 2026-10-12 · unbaked registry
Projects
Source releaseBorland C++87 starspushed 2014-06-07GPL-2.0 license
Catacomb Abyss source code
Official source release (companion to main entry).
What you need
You need your own copy of the game: these projects ship code only.
More on DOS
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DOSDoomSource releaseMatching decomp+8199320k2026-10-12DOSChex QuestSource release199620k2024-05-24DOSCommand & Conquer: Red AlertSource releaseReimplementation+3199618k2026-10-11DOSCommand & ConquerSource releaseReimplementation+2199518k2026-10-12DOSTransport Tycoon DeluxeReimplementationDisassembly+119958.4k2026-10-12DOSQuakeSource releaseMatching decomp+419966.1k2026-10-12DOSSimCity 2000Static recompReimplementation+119935.3k2026-10-11DOSHereticSource releaseReimplementation+119943.1k2026-10-12Found via 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.