OpenAI dev blog: build a retro handheld game with Codex and ModRetro Chromatic

dkundel · x · 2026-11-10

The OpenAI Developer Blog published a tutorial on building a retro handheld game with Codex and running it on the ModRetro Chromatic hardware. Inspired by the iconic Game Boy, it walks through the full path from coding with Codex to deploying on a real handheld device — a practical reference for developers wanting to pair AI coding agents with small hardware projects.

Related event: OpenAI Codex Gets ModRetro Plugin for Building Handheld Games(4 posts)→

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