Ridge Racer (kazuyette)

Game: Ridge Racer → (PS1, 1993)

rr-decomp: a matching decompilation of the Japanese release (SLPS-00001) and, alongside it, a static recompilation that runs it natively. The decompilation has been complete since October 10: all 408 game functions are C that GCC 2.5.7 compiles back to the same bytes, and the resulting executable is identical to the original. The playable part is separate: the project’s own translator turns every MIPS instruction of PSX.EXE into C, and a hardware model written for this game does the rest, with no BIOS image, since it reimplements the sixteen BIOS functions the game calls. Version 0.1.0 (August 17) boots from your disc to a race, draws with a software rasterizer, plays the CD’s twelve audio tracks, synthesizes the sound chip’s 24 voices, and takes keyboard and controller; the stick and triggers pose as a neGcon, the analog controller the game already supported, and F1 opens a settings menu of its own. Only 12 of the game’s 40 states have been exercised by a scripted run, and 17 by hand. The plan is to swap the translated functions for the decompiled ones one at a time. There are no published binaries: it’s built on Linux or WSL, and a Windows .exe can be produced with MinGW. The project describes itself as heavily AI-assisted: tooling, code splitting, and C conversion are driven by Anthropic’s Claude under human direction and review, and 42 of its commits list Claude as a co-author.

You needYour own copy of the Japanese release of Ridge Racer for PS1 (SLPS-00001): its PSX.EXE (SHA-1 31ec5d36…) and an image of the data track, which a script in the project makes from your .bin. Plus Python 3 and a C compiler on Linux or WSL, and SDL2 for a window, sound, and controller; for Windows, the .exe is cross-compiled with MinGW.

How it gets to PC

Static recompilation

Console

PlayStation

Architecture

MIPS

Author

kazuyette

Original studio

Namco

Year

1994

Stars

46

Last activity

2026-10-10 · 20 days ago

Latest version

v0.1.0 · 2026-08-17

Language

C

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