Videos of Mario fighting bosses from Elden Ring, game mashups and paid titles running in web browsers have highlighted how artificial intelligence is changing game decompilation. The technology has sharply reduced the time and expertise needed to reconstruct a game’s code from its finished product, raising new concerns about copyright and unauthorized copying.
Decompilation is a form of reverse engineering: programmers study a finished game or application to rebuild its code. The process was traditionally laborious and could take teams months, even for relatively simple games. Recent AI tools have made it possible to produce code resembling the original in a matter of hours, sometimes with only a small number of instructions.
The technique can serve legitimate purposes, including preserving older games whose source code has been lost and supporting fan-made mods or expansions. But it can also be used to copy games without permission. Independent developers are particularly concerned that AI-assisted clones could quickly appear in digital storefronts after a game attracts attention.
Kotaku recently reported that imitations of the indie game Needle in a Haystack Simulator appeared on Steam after videos of its demo went viral. Its developer, Bitdot, added a prominent “original” notice to the game’s cover. Digital Sun Games, the studio behind Moonlighter and Cataclismo, has also changed its public testing plans for its upcoming game ReVamp amid fears that it could be copied.
Some AI-made projects have drawn legal action because they combine copyrighted games or make paid titles playable through unauthorized platforms. Epic Games took down a browser-based pirated version of Fortnite, while Microsoft removed browser adaptations of Minecraft, Call of Duty and Halo.
Anthropic updated its Opus 5.5 model with instructions designed to prevent it from recreating existing games. The measure has been described as a temporary safeguard, since users may be able to get around such restrictions by changing how they phrase their prompts.
The technology is also attracting interest from publishers looking for legitimate uses. Xbox CEO Asha Sharma announced Xbox Labs on the 13th, a division tasked with studying how this kind of approach could be used legally at scale. The same tools that may speed up game development and broaden access, the report notes, can also cause harm when used to create unauthorized copies.
Sources: Folha Ilustrada.