Opus 5.5 used to add Geno as a new fighter in Super Smash Bros. Melee

Over a week, the author used Claude Opus 5.5 and the doldecomp decompilation project to make Geno a fully playable new fighter in Melee, with a trailer filmed entirely in-engine.

Michael Bishop

@BishPlsOkArchived 2026.10.04Originally posted 2026.10.04

Michael Bishop @BishPlsOkOriginally posted 2026.10.04

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@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.

x.com/bishplsok/status/2106427860491874654Archived 2026.10.04 10:03

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