A website that tracked human efforts to reverse engineer and decompile video games has switched off its main public index and leaderboard. The administrator of decomp.dev announced the change Thursday, saying AI models have made decompilation so much easier that “the community aspect of decompilation has been broken.”
Decomp.dev, launched in 2024, centralized progress on projects that rebuild game source code from binaries. It gamified that progress with percentages, which once reflected painstaking human work. “Today, that same idea has warped decompilation into a hollow numbers game, exacerbated by folks who just want to burn tokens to make number go up or ‘port game to PC’, all else be damned,” the site’s pseudonymous administrator, who goes by Encounter, wrote in the announcement.
“Historically, matching decompilation has been a brutally difficult, time consuming task, on the scale of years for any moderately-sized game with a number of active contributors,” Encounter wrote. 404 Media reported the shutdown on Oct. 15.
Encounter wrote that AI models released in early 2026, Claude Opus 4.6 and GPT-5.4, already seemed to know the community’s tools, but their output still needed “a significant amount of human cleanup” and cost too much per task. Newer models such as GPT-6-Astra are “significantly better at following complex directions, cross-referencing resources for symbols or debug information, and writing natural code with enough guidance,” according to the post. They are also faster and cheaper. “It is now clear that, with the right guidance, human input, and code reviews, AI can expedite the decompilation process in a significant way,” Encounter wrote.
The trouble is what some people did with that power. The projects are open source, and Encounter wrote that bad actors have been forking them to “finish” them with AI, even though some teams don’t want AI used for legal or ethical reasons. Others raced to release half-built PC ports from decompilations they didn’t contribute to. According to the post, these hostile forks put “little to no effort” into meaningful contributions, “tearing apart our community fabric.” It has also become impossible to keep track of which projects are mainly human-led, 404 Media reported.
The leaderboard that once kept contributors motivated, when “every fraction of a percent took real human effort,” now rewards speed over quality. Encounter acknowledged that the attention has brought in genuine newcomers, but concluded that decomp.dev as a public index and leaderboard “is now causing more harm than good.”
Banning AI-assisted projects isn’t the answer either, in Encounter’s view. “Slop” is “hard to define, and even harder to moderate,” and as a sole hobbyist Encounter doesn’t want to judge hundreds of projects, Tom’s Hardware reported.
Existing projects will keep reporting, and their individual pages and historical data stay online. That includes finished decompilations such as Super Smash Bros. Melee and Animal Crossing, according to Tom’s Hardware. New projects can no longer be added, and Encounter wrote that nobody may reuse the site’s code to build a replacement.