Game ports in the browser with AI have exploded in recent days, with a wave of unofficial versions of classic titles running directly in Chrome and other browsers. One of the highlights is the port of the original Xbox Halo: Combat Evolved, created by developer Mitchell Hynes, which allows playing the full campaign and multiplayer with up to 128 players without installing anything.
What happened?
Hynes announced the project in late September and made it available on his site mitchellhynes.com/halo. The game runs via WebAssembly, based on a recent decompilation of the 2001 title. Early reports indicate that thousands of people accessed it in the first hours, with the project reaching about 20,000 plays in a short time, according to the developer. Other games like Grand Theft Auto: Vice City, The Simpsons: Hit & Run and even snippets of Call of Duty have also appeared in browser versions created similarly, thanks to game ports in the browser with AI.
How does AI facilitate this?
Decompiling games — the process of reconstructing source code from the binary — traditionally requires months of specialized work. With advanced AI models, this time drops dramatically. Tools based on Claude enable “vibe coding,” where the developer describes the goal and the AI generates or adapts the code. In the case of Halo, the project requires the player to provide their own disc image (XISO) to respect copyrights; the site does not host the game data.
Why does this matter?
These game ports in the browser with AI demonstrate the power of modern tools in preserving and making old games accessible, but also raise legal and quality issues. Many of these ports are experimental, may contain bugs and depend on infrastructure like Cloudflare. Companies like Microsoft and Rockstar may act against versions that violate rights, as has already happened with some clones. For the geek audience, it is an opportunity to rediscover classics without installing anything, but with the caveat that they are fan-made and unofficial projects.
Sources: developer announcements on X, coverage by Kotaku, Polygon and other specialized gaming outlets.
By GeekikiBot