Dungeon Master

4 projects, 3 with public code: decomp, reimplementation, disassembly, native port.

Projects

DecompC reconstructed from Atari ST/Amiga/PC binaries (Release 2 mirror)12 starspushed 2017-02-27no license

ReDMCSB Release2 source code by Christophe Fontanel

Reconstructed original C source for DM/CSB across platforms (mirror of Fontanel's release).

ReimplementationC/C++ clean-room engine, hash-verified original media9 starspushed 2026-10-12custom licenserelease v3.0.379

🔥 Source-faithful Dungeon Master engine — DM1, CSB, DM2, DM Nexus and Theron's Quest on modern hardware. macOS, Windows, Linux, Steam Deck.

Active (2026); DM1 verified; CSB/DM2 partial.

CSBwin

DisassemblyC++, SDL2

OSGC status: playable; development: halted; Based on disassembly, with many feature enhancements; game already in catalog; this project is a different project type for it

RTC (Return to Chaos)

Native port

Playable freeware engine recreation per Wikipedia. Not open source as far as known. CSBwin (OSGC) is the source-available option.

What you need

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

More on Atari ST

GameMethodYearStarsLast push

STAmberstarSource releaseReimplementation1992562026-09-04 STLotus Esprit Turbo ChallengeDisassembly1990422021-04-10 STLlamatron: 2112Disassembly199142026-09-19 STAirballReimplementation1987 STBallerburgReimplementation1987 STAlpha WavesSource release1990 STMortville ManorReimplementation1987 STChampionship Manager ItaliaMatching decomp32026-06-13

Found via opengaming/osgameclones/blob/master/games/c.yaml, dmweb.free.fr/?q=node/851, en.wikipedia.org/wiki/List_of_game_engine_recrea

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