TL;DR
Get the latest gadgets delivered free with Prime
- Fast, free delivery on millions of items
- Prime Video, Amazon Music and more included
- Member-only deals all year
OpenAI began selling a $200 ModRetro Chromatic: Codex Edition handheld on November 9, 2026. It includes a programmable cartridge and a workflow that uses Codex and GB Studio to build Game Boy-style games, but sales totals and the planned November 19 restock remain unconfirmed.
OpenAI began selling the $200 ModRetro Chromatic: Codex Edition on November 9, pairing ModRetro’s Game Boy-style handheld with a programmable cartridge and a Codex-assisted game-making workflow. The product page showed “Restock soon” the next day and listed November 19 as the expected restock date, though OpenAI says dates may change.
The edition is sold through OpenAI’s Supply Co. store in a transparent shell and includes one programmable Codex Cartridge and three AA batteries. Its listed hardware includes a 2.56-inch, 160-by-144-pixel IPS display, PBT buttons, a speaker and a headphone jack. It plays Game Boy and Game Boy Color cartridges as well as Chromatic cartridges. The product page does not list a Tetris game in the package.
OpenAI describes a workflow in which users prompt Codex with a game idea, then refine scenes, artwork and logic in GB Studio, a visual editor for Game Boy games. Users can build a ROM and test it in a browser emulator, stream it from a computer to the handheld, or write it to the Codex Cartridge for play without a computer. The device setup requires a firmware update, an activation code to enable Developer-Mode, the Codex app and the ModRetro Chromatic plugin.
OpenAI’s developer blog demonstrates a prompt about a beaver cutting trees to build a lodge, with Codex helping to create sprite sheets, edit collision maps and run the game in an emulator. OpenAI warns that writing a new ROM erases the cartridge’s existing game and may erase saved games; its installer does not back up the cartridge. The company says it has published 13 Codex-built games for the Chromatic, available to play in a browser or download as ROMs.
3 Ways the Chromatic Codex Edition Reimagines AI Prompts
OpenAI pairs a retro handheld with Codex and a programmable cartridge, turning a text idea into a game you can build, test and play.
From prompt to playable game
Codex helps turn a plain-language idea into a game, with GB Studio for hands-on refinement.
Prompt Codex with a concept, such as a beaver cutting trees to build a lodge.
Work on scenes, artwork and logic; Codex can help with sprite sheets and collision maps.
Build a ROM, test it in a browser emulator, stream it from a computer or write it to the cartridge.
Three ways to play
Test in an emulator
Check the game in a browser before loading it onto the handheld.
Play from a computer
Stream the game from a computer to the Chromatic.
Play untethered
Write the ROM to the Codex Cartridge to play without a computer.
What buyers should know
- Chromatic handheld
- One programmable Codex Cartridge
- Three AA batteries
- Tetris is not listed as included
- A new ROM erases the cartridge’s existing game
- Saved games may also be erased
- The installer does not back up the cartridge
Availability remains uncertain
The product page showed “Restock soon” on November 10 and listed November 19, 2026 as the expected restock date.
A Prompt Becomes a Portable Game
The product makes OpenAI’s coding agent tangible through a familiar handheld and a physical cartridge. Its pitch is that a plain-language idea can become a game that runs on dedicated hardware, extending Codex’s role from writing code on a computer to helping create something users can carry and play.
For buyers, the offer combines a retro gaming device with a development workflow. The price is $200; by comparison, ModRetro’s store listed a transparent Chromatic bundled with Tetris at $149.99 on November 10. That comparison does not establish the value of the Codex package: its listed bundle includes a programmable cartridge, while the Supply Co. page does not mention Tetris. OpenAI separately lists a $35 carrying case and $50 additional Codex Cartridge.
Popular right now
Samsung 43-Inch M70H Series 4K Mini LED Smart TV (2026)
Vitamix VX1 Professional-Grade Blender, 64 oz, Black
Ninja DualZone Air Fryer 10 Qt Smart 6-in-1 Grey
As an affiliate, we earn on qualifying purchases.
From DevDay Giveaway to Store
The Supply Co. page says the Codex Edition was first introduced as a DevDay exclusive and describes it as a popular item. GIGAZINE reported that the earlier edition was given to attendees at OpenAI’s developer conference on September 29, 2026, the same day ModRetro announced the collaboration on X. OpenAI described the retail version as “back with a new look,” and a developer forum post introduced the sale with “By popular demand.”
The underlying Chromatic is ModRetro’s handheld for Game Boy and Game Boy Color cartridges. ModRetro says its FPGA-based hardware plays original cartridges “with 100% accuracy”; that is the manufacturer’s claim. OpenAI’s product page lists shipping to the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union. It says non-defective items cannot be returned, and that warranty and support are handled by ModRetro.
“with 100% accuracy”
— ModRetro
Restock and Sales Remain Unclear
OpenAI has not disclosed how many units were made or sold. The November 19 restock is an expected date shown on the product page, not a guaranteed delivery date; OpenAI says restock timing may change. The available source material also does not specify how many units will be available or whether the product will remain in production after the restock.
The store listing says the extra Codex Cartridge includes an activation code for Chromatic Developer-Mode, limited to two devices and exclusive to the Codex Edition. It does not explain whether the included cartridge’s activation has the same device limit or how access would work if a device is replaced. Buyers should also note the stated no-return policy for non-defective items and that ModRetro, rather than OpenAI, handles warranty and support.
Watch for the November Restock
The next stated milestone is the expected November 19 restock on Supply Co. OpenAI cautions that the date may change, and it has not announced quantities or a longer-term sales schedule. Buyers interested in the device will need to check the store for an updated availability notice.
Further detail may also clarify how Codex and the Chromatic plugin work for users beyond the example games and workflow OpenAI has shown. For now, the confirmed offer is a handheld, a programmable cartridge and software steps for building and loading ROMs, with the cartridge-erasure warning applying when a new ROM is written.
Key Questions
What is included with the Codex Edition?
The $200 package includes the ModRetro Chromatic: Codex Edition handheld, one programmable Codex Cartridge and three AA batteries. The Supply Co. listing does not mention a Tetris cartridge.
How does Codex help make a game?
OpenAI describes using Codex to turn a text prompt into a game, then refine it in GB Studio, build a ROM and test it in an emulator or on the Chromatic. The ROM can then be written to the programmable cartridge.
When will the handheld be back in stock?
The product page showed “Restock soon” on November 10 and listed November 19, 2026 as the expected restock date. OpenAI says the date may change.
Can writing a game erase data on the cartridge?
Yes. OpenAI warns that writing a new ROM erases the game on the cartridge and may erase its saved games. The installer does not create a backup.
Where does it ship, and who handles support?
The listing names the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union as shipping destinations. ModRetro handles warranty and support; the listing says non-defective items cannot be returned.
Source: Thorsten Meyer AI
