BODY: Reverse-engineering a Nintendo 64 game is usually a multi-year grind involving a rotating cast of volunteers. Engineer Chris Lewis did it to Snowboard Kids in 84 days.
In a blog post published on August 26, 2026, Lewis announced that his decompilation of the 1997 N64 racer had hit 100%. Every function in the game now exists as human-readable C source code — and crucially, when that code is run through the period-correct compiler toolchain, it produces machine code identical to the original cartridge, bit for bit. That "matching" standard is the gold bar in decomp circles: it proves the reconstructed source isn't merely an approximation that happens to behave similarly, but a faithful recovery of what the original developers wrote.
The speed is what has the scene talking. Comparable projects — the long-running efforts around Super Mario 64, Ocarina of Time, and Majora's Mask — consumed years of distributed labor. Lewis benefited from standing on that accumulated infrastructure: modern decompilers, automated diffing tools that score how closely compiled output matches the target, and shared knowledge of the quirks in the SGI compilers Nintendo's N64 partners used in the late 1990s. Snowboard Kids is also a smaller, more contained game than a sprawling Zelda title.
A matching decompilation is the starting gun for everything fans actually want: native PC ports, widescreen and high-framerate support, online multiplayer, translation patches, and modding tools — none of which require shipping copyrighted game assets, since the source tree contains only code.
The insider take
There's a particular irony in Snowboard Kids getting this treatment. Developed by Racdym and published in Japan by Atlus in 1997, it was a mid-tier title that never carried the institutional weight of a Nintendo first-party release — exactly the kind of game that quietly vanishes from Japanese corporate memory. Rights to these late-90s cartridges are often tangled across publishers, developers, and successor companies, which is why they rarely reappear on Nintendo's subscription services. Japanese preservation advocates have argued for years that this legal murk, not technology, is the real barrier to game history. Decomp projects sidestep the stalemate entirely: the code comes back whether or not anyone can agree on who owns it.
Originally reported by GIGAZINE (Japanese).