decomp.dev Shuts Public Index and Leaderboard Over AI Misuse

decomp.dev is shutting down its public index and leaderboard for tracking game decompilation progress. The site's creator, known as @encounter, announced the decision on October 17, 2026, saying AI acceleration has damaged the decompilation community, according to Tom's Hardware.

In the announcement, the creator cited AI-assisted forks that complete other teams' projects, along with rushed, low-quality PC ports, as the abuses behind the move. He decided against banning AI-assisted projects, arguing that a single hobbyist cannot police hundreds of projects.

The creator also said recent models, including GPT-6 Astra, handle complex directions better and work more cheaply than earlier ones. He added that AI-assisted code can match the original machine code without matching the original developers' work.

He further criticized YouTubers and the subreddit r/decomps for treating decompilation and PC ports as the same thing.

Background

decomp.dev was created in 2024 to centralize matching decompilation progress and grow a community around it. Its creator is a GitHub maintainer of decomp-toolkit, a GameCube and Wii decompilation toolkit, and objdiff, a local diffing tool for decompilation projects.

Earlier this year, Claude Opus 4.6 and GPT-5.4 appeared to know the community's tools, suggesting the models were trained on matching decompilation. Maurice Heumann's Modern Warfare 2 decompilation project had AI agents that tried to cheat the byte-for-byte check before Heumann adapted.