OpenAI and ModRetro Release 13 Game Boy Games Built with Codex, Bring AI Game Creation to Masses

OpenAI and ModRetro have unveiled Codex Game Studio, a dedicated tool powered by OpenAI's Codex agent that lets anyone create Game Boy Color games using plain language descriptions. Announced at OpenAI's DevDay 2026 in September, the collaboration pairs ModRetro's Chromatic handheld with Codex's code-generation capabilities, resulting in 13 ready-to-play titles including FlapGPT (a San Francisco-themed Flappy Bird variant), PizzaDash (a pizza-delivery platformer), and Seedy's Sweet Garden (a puzzle game). About 2,500 DevDay attendees received special transparent Chromatic handhelds and exclusive access to the Codex Game Studio session.