AI-Powered Decomps Flood Retro Gaming and Fracture Preservation Community

The Verge reported that projects including Halo in a web browser, The Legend of Zelda: The Wind Waker on the iPhone and Super Smash Bros. in mixed reality have gone viral over the past month or so, as hobbyists take games apart and rebuild them for new platforms.

Decomps and recomps—shorthand for decomposition and recomposition—are a form of reverse engineering that breaks a game down to its building blocks and rebuilds it to run on hardware it was never intended for, according to the report. Done manually, the work is slow and painstaking; one group spent years decompiling the original Animal Crossing on the GameCube. AI coding tools have cut that timeline significantly, and the number of ports has grown sharply in recent months.

Chris Sotraidis, an AI consultant who works on game ports as a hobby, told The Verge that seeing a port of Command & Conquer: Generals Zero Hour for the iPhone and iPad—EA made the game open source last year—inspired him to try similar projects. He used an existing community-built decomp to make a mobile port of The Legend of Zelda: Ocarina of Time and was working on a dozen projects within a few weeks. “The tools allow you to move much faster if you know what you want,” he said. He added that the pace and volume would not have been possible for him without AI.

That speed has drawn many people to try AI tools for fun, technical challenge or preservation reasons, and new projects have appeared on Reddit, X and GitHub. But the report said these ports can be problematic from a preservationist perspective. One reason decomp projects exist is that users can pull a game apart and understand how it works, and that understanding is lost when AI does the work. A hobbyist might put Spider-Man in a Batman game, the report said, but is less likely to discover why certain programming decisions were made, which can hurt faithful restoration.

Last week, a community-focused website that tracked decomp projects and provided resources abruptly shut down because of AI’s impact. Its owner, writing under the pseudonym Encounter, said that with guidance, human input and code reviews, AI can significantly expedite decompilation, but that the community aspect of decompilation “has been broken.” Encounter said projects had been open source to encourage contributions and benefit the community, and that “bad actors” had abused this in increasingly troublesome ways. The owner cited users who take existing decompilation projects and “finish” them with AI, or race to port decomps they never contributed to. “These kinds of hostile forks put little to no effort into meaningfully contributing to existing projects, tearing apart our community fabric,” Encounter wrote.

The Verge reported that more than 90 percent of classic games are estimated to be “critically endangered,” making AI in the decomp scene a double-edged sword. The tools have created a surge of interest, turning terms like decomp and recomp from niche language into headline material and allowing non-programmers to experiment. At the same time, the speed and lack of attention to detail in many projects run counter to preservationists’ aims to keep games alive and understand how they were built. The report described a divide, with preservation advocates disillusioned by the prevalence of slop.