Key Notes
- The $200 Chromatic: Codex Edition is a ModRetro collaboration sold through OpenAI Supply Co., with one programmable cartridge included and a November 19 restock expected.
- The ModRetro plugin helps Codex build and test Game Boy Color games on a computer, then export ROMs for the handheld.
- OpenAI’s gallery currently offers 13 games to play in a browser or download for compatible hardware, so users can explore the results without buying the console.
OpenAI and ModRetro are putting AI-made games onto physical cartridges with the $200 Chromatic: Codex Edition. The transparent handheld pairs a retro console with a programmable cartridge, giving people a way to play the games they build with OpenAI’s coding agent away from their computers.
The collaboration first appeared as a DevDay exclusive and has returned through OpenAI Supply Co. with a new look. The store currently lists an expected November 19 restock. It is a special edition of ModRetro’s Chromatic, with game creation handled by Codex on a computer.
From a prompt to a cartridge
The ModRetro Chromatic plugin connects Codex to tools for making Game Boy Color games. Users describe an idea, then work with the agent to develop characters, scenes and game logic. OpenAI’s developer guide demonstrates the process with Lodge Podge, an adventure in which a beaver gathers materials to build a lodge.
The output includes an editable GB Studio project, artwork and audio assets, and a compiled game file known as a ROM. Creators can test that file in an emulator, revise animations or collision maps, and ask Codex to rebuild it. An annotation tool lets them freeze a preview and point to the part they want changed.
A finished ROM can be written to the included Codex Cartridge for play without a computer. Users can also stream a game from their computer to Chromatic while testing its controls, display and sound. Cartridge play requires a firmware update and Developer Mode, according to the product listing.
Thirteen games to try before buying the hardware
OpenAI’s game gallery currently offers 13 Codex-built titles that run in a browser, with ROM downloads for compatible hardware. They include FlapGPT, Codex Land, Seedy’s Sweet Garden and Hollow Descent. That gives prospective creators a way to explore the results before buying a console.
The handheld has a 2.56-inch backlit IPS display with 160x144 resolution, Gorilla Glass and a transparent ABS shell. It supports Game Boy, Game Boy Color and Chromatic cartridges, and comes with three AA batteries. Shipping is limited to the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union.
The appeal is the short path between describing a game and holding a playable cartridge. Recent Fable 5.2 demos showed creators using AI to assemble shooters, simulations and kart racers. The ModRetro collaboration takes that experimentation into a much smaller retro format, where the result can leave the browser and become a game someone carries around.
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