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TL;DR
OpenAI began selling a $200 ModRetro Chromatic: Codex Edition handheld on November 9, with a programmable cartridge intended for games made using its Codex coding agent. On November 10, the product page said “Restock soon” and listed November 19 as the expected restock date; sales totals and the number of units produced were not disclosed.
OpenAI began selling the $200 ModRetro Chromatic: Codex Edition on November 9, pairing a retro handheld with a programmable cartridge for games created through its Codex coding agent. By November 10, OpenAI’s Supply Co. store listed the console as “Restock soon” and gave November 19 as the expected restock date, without saying how many units had sold or would be available.
The device is a ModRetro Chromatic in a transparent shell, bundled with one programmable Codex Cartridge and three AA batteries. Its 2.56-inch, 160-by-144-pixel backlit display is designed for Game Boy and Game Boy Color cartridges, as well as Chromatic cartridges. The product listing gives a weight of 6.2 ounces and says the handheld also works with ModRetro’s separately sold Rechargeable Power Core.
OpenAI presents the cartridge as the last step in a creation workflow: describe a game, use the ModRetro Chromatic plugin in Codex to generate and revise it in GB Studio, export a ROM, then write that file to the cartridge. OpenAI says games can also be tested in a browser emulator or streamed from a computer to the handheld before being loaded onto the cartridge.
Getting started requires a firmware update, an activation code included with the Codex Edition to enable Developer-Mode, the Codex app and the Chromatic plugin. OpenAI’s developer guide shows Codex helping create sprites, edit collision maps and run a game in an emulator. Its instructions warn that writing a new ROM erases the cartridge’s existing game and can also erase saved data; the installer does not make a backup.
A handheld for AI-made games OpenAI’s Codex Edition
OpenAI paired a ModRetro Chromatic with a programmable cartridge so users can create games with Codex and play them on a handheld.
From prompt to playable game
Codex helps create and revise a game before its ROM is loaded onto the cartridge.
Use Codex and the Chromatic plugin to generate game content.
Revise in GB Studio; test in a browser emulator or stream from a computer.
Export the ROM and write it to the programmable Codex Cartridge.
What comes in the bundle
Chromatic handheld
Transparent-shell ModRetro device with a 2.56-inch, 160-by-144-pixel backlit display.
Programmable cartridge
One Codex Cartridge is included for loading games made through the described workflow.
Retro compatibility
Designed for Game Boy, Game Boy Color and Chromatic cartridges.
Three AA batteries
A separately sold Rechargeable Power Core is also supported.
What buyers should know
- The store listed “Restock soon” on November 10.
- November 19 was an expected date, and OpenAI says dates may change.
- Sales totals and production numbers were not disclosed.
- Setup requires a firmware update, activation code, Codex app and Chromatic plugin.
- Writing a new ROM erases the cartridge’s existing game and can erase saved data.
- The installer does not make a backup.
A Handheld Built Around Game Creation
The announcement is less about a new gaming platform than a physical showcase for Codex. Buyers can use the handheld to test a game they have prompted and revised, turning an AI coding tool’s output into something playable away from a computer. That may make the process more tangible for developers and hobbyists than a browser demonstration alone.
It also gives OpenAI a way to bring users into its coding workflow through a limited physical product. The hardware is made by ModRetro, while the software path depends on Codex, GB Studio and the cartridge’s developer-mode features. The purchase price does not include the separately listed $35 carrying case or $50 extra cartridge.
The device is not presented as a general-purpose AI console: the described use is making and playing games for Chromatic hardware. Whether the bundle offers value beyond the standard handheld will depend on how well buyers can use the tools and how much they want a programmable cartridge.
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From DevDay Giveaway to Store
OpenAI’s Supply Co. listing says the Codex Edition was first introduced as a DevDay exclusive and describes it as a popular item. The supplied report says attendees received an earlier edition at OpenAI’s developer conference on September 29, 2026, when ModRetro announced the collaboration. OpenAI later described the retail version as being “back with a new look.”
The two companies have distinct roles: ModRetro makes the Chromatic hardware, while OpenAI sells this edition through Supply Co. and promotes the Codex-based creation process. ModRetro says its FPGA hardware plays original cartridges “with 100% accuracy”; that is the company’s product claim, not an independent test reported here.
Price comparisons depend on the bundle. On November 10, ModRetro’s store listed a transparent Chromatic with a Tetris cartridge for $149.99, while other Chromatic-and-Tetris bundles began at $199.99. OpenAI’s listing includes a programmable cartridge and does not list Tetris in the box, so the bundles are not identical.
Restock and Sales Details Remain Open
OpenAI has not disclosed production numbers, sales figures or inventory, so the “Restock soon” status does not establish how many units sold or whether demand exceeded supply. The store listed November 19 as an expected restock date, but its guidance says dates may change; availability on that date is not confirmed.
The listing says the product ships to the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union. It does not provide a broader international release plan. OpenAI’s terms also say non-defective items cannot be returned, while warranty and support are handled by ModRetro rather than OpenAI.
It is also not clear how the Codex workflow will work for buyers with different levels of coding experience, or what ongoing access to the plugin and Developer-Mode will require beyond the stated activation process. The supplied information does not establish independent performance testing of the hardware or the generated games.
Watch the November Restock
The next listed milestone is the expected November 19 restock on Supply Co. OpenAI says the date may change, so buyers will need to check the store for confirmation. The product page is also the source for current shipping regions, bundle contents and accessory availability.
For owners, the immediate next steps are to follow ModRetro’s setup instructions, activate Developer-Mode and install Codex with the Chromatic plugin. Anyone rewriting a cartridge should heed the data-loss warning and make any needed copies of game files or saves before proceeding; the installer itself does not back up the cartridge.
Key Questions
What is the ModRetro Chromatic: Codex Edition?
It is a $200 ModRetro Chromatic handheld sold by OpenAI’s Supply Co. with one programmable Codex Cartridge and three AA batteries. It plays Game Boy, Game Boy Color and Chromatic cartridges.
How does Codex work with the handheld?
OpenAI describes a workflow in which users prompt Codex to help make a game, refine it in GB Studio, export a ROM and write it to the Codex Cartridge. Games can also be tested in an emulator or streamed from a computer to the handheld.
When will the console be available again?
On November 10, 2026, the Supply Co. page said “Restock soon” and listed November 19 as the expected restock date. OpenAI says restock dates may change, and the date has not been independently confirmed.
Does rewriting the cartridge erase data?
OpenAI warns that writing a new ROM erases the game already on the cartridge and can erase its saves. Its installer does not back up the cartridge.
Where does the Codex Edition ship?
The listed destinations are the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union. The product listing says non-defective items cannot be returned; ModRetro handles warranty and support.
Source: ThorstenMeyerAI.com
