Fukami 1.0.0

Fukami 1.0.0 — native port of Ridge Racer V (USA, SLUS-20002) for macOS (Apple silicon) and Steam Deck.

No game data is included. You need your own copy of Ridge Racer V (USA) as a CHD made from your disc; Fukami checks it and unpacks what it needs on first launch. Not affiliated with Bandai Namco or Sony. See LEGAL.md.

Downloads

File	For
Fukami-1.0.0-macos-arm64.zip	Macs with Apple silicon
Fukami-1.0.0-linux-x86_64.tar.gz	Steam Deck (SteamOS 3.7+); other Linux x86-64 untested
SHA256SUMS	checksums of both files

The builds contain the game's code translated to native code (generated from the author's own copy of the game). Download only from this page.

Install

• macOS: unzip, move Fukami to Applications, then right-click → Open the first time (ad-hoc signed, not notarised yet).
• Steam Deck: in Desktop Mode extract the archive, open a terminal in the Fukami folder and run ./install.sh (adds Fukami to Steam). Put your .chd in ~/.local/share/Fukami/ or pick it on first launch.

See docs/USER_GUIDE.md for controls, settings and troubleshooting.

Defaults

Internal resolution 4x (Mac) / 2x (Deck), 16:9 real widescreen, AA1 on, car LOD 4, fullscreen. VU1 and GS run on two threads (split_gs = true) and the frame pacer sleeps (pacer_spin = 0) on every platform; on a Steam Deck, a Pacer spin of up to 17 (menu → Performance) steadies the frame rate at the cost of battery.

What was verified

• Asset-free test suite 32/32 on macOS and Linux (CI, on this exact commit).
• Game code generated from the original ELF is identical to the reference hashes (1,859 files).
• The runtime of the previous pre-release (rc2) reproduced, byte for byte, the per-start RAM digests and semantic traces of the development runtime on the recorded neutral (3,000 starts) and race (5,100 starts) workloads; with the VU1/GS split on or off the digests and traces are identical on macOS.
• The Linux tarball of rc2 was run on a Steam Deck (Desktop Mode, attract loop): 6,500 starts paced at 59.83 starts/s, 10,000 unpaced at 128.7 starts/s, no worker failures. With pacer_spin = 0 the Deck misses more 20 ms frames than with 17 (about 2% against 0.9% of starts in the attract race).

Not verified / known limitations

• This build was compiled and packaged from the tagged commit; its digests and the Deck run were not repeated (the code differs from rc2 only in the default settings and the README).
• macOS: the app declares the macOS version it was built on (macOS 27.0). It will not open on older versions.
• Steam Deck: install.sh, the first-launch CHD picker, Game Mode, play with a controller and audio were not tested on the Deck.
• Pixel captures and a control of each runtime against itself were not part of the verification.
• Only the USA release is supported. No in-game controller remapping. A long live session with many cars on screen stalled once in an earlier test (a replay of it ran fine).

Provenance

Source: tag v1.0.0 (commit af253dd); the runtimes were built from this exact commit. Game code generated with scripts/fukami_generate.py from the author's ELF; reference hashes in config/rr5/.