FlapGPT
A Flappy Bird-style Game Boy Color game built with OpenAI's Codex.
Official site developers.openai.com, verified Nov 3, 2026. Official OpenAI developer site; linked from the official ModRetro + Codex collection page.
Where to play
Every platform this game is on. Links are checked against official sources; we never host or mirror games.
- Play free — official siteBrowserReleased · In-browser emulator (needs Canvas and WebAssembly); ROM download on the same pageFree
Runs in a desktop browser. No download.
Browser (no download) · Official link verified Nov 3, 2026.
About FlapGPT
A Flappy Bird-style game for the Game Boy Color, with a San Francisco background according to press coverage. It is one of 13 games in the ModRetro + Codex collection, which OpenAI's developer site says were built with Codex, OpenAI's coding agent, for Game Boy Color. It plays free in the browser through an emulator on the same page, which also offers a ROM download for the ModRetro Chromatic and compatible hardware. No individual creators are named.
How it was built
Partially verifiedOpenAI's collection page says the games in the collection, FlapGPT among them, were built with Codex for Game Boy Color. It does not say how much of the code or art Codex produced.
- ObservedPress report on the ModRetro and OpenAI collaboration names FlapGPT among the games shown. — The Shortcut
Built with OpenAI's Codex coding agent as a Game Boy Color ROM, per OpenAI's collection page.
- Engine / framework
- Not disclosed
- Languages
- Not disclosed
- Team size
- Not disclosed
- Development time
- Not disclosed
- Development cost
- Not disclosed
- AI-written code
- Not disclosed
Verification notes: Codex statement from OpenAI's ModRetro collection page; play page, controls and ROM link (flapgpt.gb) from the game page. Genre and setting from press coverage. The OpenAI pages show no release date; the earliest dated source is The Shortcut (30 Sep 2026). The same page is mirrored at learn.chatgpt.com/modretro/flapgpt.
Development history
Press coverage of the ModRetro and OpenAI collaboration names FlapGPT among the Codex-built games, playable in a browser or as a ROM download.
ObservedThe Shortcut
Game performance
Each figure measures something different — concurrent players, owners, downloads and sales are never interchangeable and are never added together. Labels show where each number comes from.
Browser (official site)
No public metrics recorded for this listing.
Not publicly available: Concurrent players (site), Monthly revenue, Gross revenue.
Sales & revenue (all platforms)
Browser game — there are no downloads to count.
Reviews & rankings
Not yet reviewed by our editors.
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Not currently ranked.
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Sources
| Source | Type | Published | Accessed |
|---|---|---|---|
| FlapGPT — ModRetro + Codex OpenAI | Official site | Not confirmed | Nov 3, 2026 |
| ModRetro + Codex game collection OpenAI | Official site | Not confirmed | Nov 3, 2026 |
| ModRetro and OpenAI team up on new Chromatic games – and anyone can build their own The Shortcut | Press | Sep 30, 2026 | Nov 3, 2026 |
| Official game page (language check) OpenAI | Official site | Not confirmed | Nov 3, 2026 |
