PC98PC-98/PC-88 · 1998 · vertical shooter
Touhou 5: Mystic Square
Touhou 5: Mystic Square (PC-98/PC-88, 1998) has a matching decompilation, nmlgc/ReC98, and 1 other public project. An agent environment already wraps it.
Data checked 2026-10-13 · unbaked registry
Projects
CPU-first reinforcement learning for native Touhou PC-98 games
Working TH05 adapter: patched HDI per env, 273-float compact observation, action masks, exact frame-stepping save-state brancher (byte-for-byte reproducible), ~223 transitions/s with 8 emulators. TH01-04 not yet claimed. Target: TH05 Lunat…
The Touhou PC-98 Restoration Project
TH05: 59.00% reverse-engineered, 51.33% finalized, 100% position-independent (status as of 2026-01-19). MAIN.EXE 55.14% RE; 100% PI. Lead dev nmlgc announced retirement on 2026-07-10 (blog 2026-10-05) citing AI 'vibecoded' forks; forks con…
What you need
You need your own copy of the game: these projects ship code only.
Agent environments
More on PC-98/PC-88
Found via touhourl/th05patch, rec98.nmlgc.net/, rec98.nmlgc.net/blog/2026-10-05
GitHub data checked 2026-10-13. Notes are summaries from the research pass; the project pages are the authority.