Touhou PC-98 (ReC98)

Games: Touhou Reiiden: The Highly Responsive to Prayers (PC-98, 1996) · Touhou Fuumaroku: The Story of Eastern Wonderland (PC-98, 1997) · Touhou Gensoukyou: Phantasmagoria of Dim.Dream (PC-98, 1997) · Touhou Yousei Gensoukyou: Lotus Land Story (PC-98, 1998) · Touhou Fuujinroku: Mystic Square (PC-98, 1998)

ReC98 (The Touhou PC-98 Restoration Project): a reconstruction of the source code of the first five Touhou Project games, which ZUN Soft released only for NEC’s Japanese PC-9801 computer in 1997 and 1998: The Highly Responsive to Prayers, the Story of Eastern Wonderland, Phantasmagoria of Dim.Dream, Lotus Land Story, and Mystic Square. It’s a matching decompilation: the executables built from its code, with the same Turbo C++ 4.0J compiler ZUN used, are identical to the originals at every commit, and the code is written to be readable and moddable. It isn’t a port: it builds PC-98 DOS programs, which need your original game files on a PC-98 or in an emulator. According to its website, as of January 19 the first game is fully decompiled and 61% of the code across all five is finalized. Besides the branch faithful to the original, it maintains a “debloated” branch that’s easier to read and meant as the base for ports to other platforms, and an “anniversary” branch that also fixes bugs; it publishes their executables as downloads, the latest, P0335, on March 16, with TH03 fixes. It’s crowdfunded, and its blog documents what it finds in ZUN’s code. The repository includes none of the games’ assets, but it does include, as disassembly, the original executables’ code that hasn’t been decompiled yet.

Console

NEC PC-9801 / PC-98

Architecture

x86

Author

nmlgc

Stars

881

Last activity

2026-03-16 · 7 months ago

Latest version

P0335 · 2026-03-16

Language

Assembly