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Geno Playable Fighter Mod for SSBM

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Oct 3, 2026

A fully playable Geno fighter mod for Super Smash Bros. Melee — the fan-favorite Square Enix character fans have begged Nintendo for since 2008, now actually in the game. @BishPlsOk built the entire thing over a week using Claude Opus 5.5 and doldecomp, the Melee decompilation project. The reveal trailer was filmed entirely in-engine, showing Geno in action with custom moves. It ships with a GitHub repo so anyone can load it up.

  • Fully playable new fighter with custom moveset added to SSBM via the doldecomp decompilation toolchain
  • Built in one week with Claude Opus 5.5 handling the heavy lifting of game code
  • Reveal trailer filmed entirely in-engine — no external editing, just raw Melee footage

“@Geno4smash I have some news for you... Geno as a fully playable, brand-new fighter in SSBM; github link in comments! Built with Claude Opus 5.5, doldecomp, and love for one of the greatest games ever made over the course of a week. Trailer filmed entirely in-engine.”

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