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TL;DR
OpenAI put the ModRetro Chromatic: Codex Edition on sale November 9 for $200, pairing ModRetro’s handheld with a programmable cartridge for games created with OpenAI’s Codex coding agent. On November 10, the product page said “Restock soon” and listed November 19 as an expected restock date; OpenAI says dates may change. Sales totals and the number of units made have not been disclosed.
OpenAI began selling a $200 ModRetro Chromatic: Codex Edition handheld on November 9, pairing the retro gaming device with a programmable game cartridge for games made using its Codex coding agent. On November 10, OpenAI’s Supply Co. store listed the product as “Restock soon” and gave November 19 as the expected restock date, while warning that dates may change.
The bundle is a transparent-shell ModRetro Chromatic, one programmable Codex Cartridge and three AA batteries. Its 2.56-inch, 160-by-144-pixel display uses a backlit IPS panel covered by scratch-resistant Gorilla Glass. The handheld plays Game Boy, Game Boy Color and Chromatic cartridges, according to the Supply Co. product details. It can also use ModRetro’s rechargeable Power Core, sold separately.
OpenAI’s pitch centers on making a game with Codex and the ModRetro Chromatic plugin, rather than on a new console format. Users can describe a game, use Codex with GB Studio to edit its art and logic, then build a ROM. The resulting game can be tested in a browser emulator, streamed from a computer to the handheld, or written to the included cartridge for play on the device without a computer.
Getting started requires updating the handheld’s firmware, entering the bundle’s activation code to unlock Developer-Mode, installing the Codex app and adding the Chromatic plugin. The plugin includes “Wrecklight,” an example game users can remix. OpenAI’s developer guide also warns that writing a new ROM erases the cartridge’s existing game and may erase its saves; the installer does not back up the cartridge.
From Prompt To Cartridge OpenAI’s ModRetro Chromatic
OpenAI pairs a retro handheld with a programmable cartridge and Codex tools, turning game creation into a physical, playable project.
What buyers get
The package combines ModRetro hardware with a cartridge designed for games made using Codex.
A familiar handheld
Transparent-shell Chromatic with a 2.56-inch backlit display, Gorilla Glass and three AA batteries.
A programmable cartridge
Use Codex, its Chromatic plugin and GB Studio to shape game art and logic, then build a ROM.
From screen to device
Test in a browser emulator, stream from a computer, or write a game to the cartridge.
The creation workflow
Owners need to set up the handheld and software before making and playing a game.
Update firmware and use the activation code to unlock Developer-Mode.
Install Codex and the Chromatic plugin, then edit a game with GB Studio.
Try the game on a computer or write its ROM to the cartridge for handheld play.
A distinct bundle
The $200 price buys a development-focused package, and the alternatives differ.
- Programmable Codex Cartridge included
- Tetris is not listed in the box
- Sold through OpenAI’s Supply Co.
- ModRetro listed a Chromatic with Tetris for $149.99
- Other Chromatic-and-Tetris bundles started at $199.99
- Different contents make direct price comparison imperfect
Stock and support
The listing gives buyers a restock estimate, but key details remain undisclosed.
| What’s listed | What to know |
|---|---|
| Expected restock: November 19 | OpenAI says dates may change |
| Sales and production totals | Not disclosed |
| Returns and warranty | No returns for non-defective items; ModRetro handles warranty and support |
A Physical Showcase for Codex
The bundle turns an AI coding tool into a physical, testable project: a user can prompt for a game, revise it and play the result on a handheld. That makes the product a demonstration of Codex’s intended workflow, not just a device sale. Buyers who want to make their own games must use Codex and its plugin, giving OpenAI a way to put its coding agent in front of people through a familiar hobby.
The offer also lowers some barriers to trying game development: the handheld, cartridge and software workflow are presented together, and OpenAI has published browser-playable games and ROMs made with Codex. But the listing does not establish how capable the tools are for inexperienced creators, how much coding knowledge users may need, or how many customers will use the workflow after purchase. The broader significance is therefore as a product experiment and marketing channel, not evidence of widespread adoption.
For buyers, the distinction between the standard handheld and the bundle matters. On November 10, ModRetro listed a transparent Chromatic with a Tetris cartridge for $149.99; other Chromatic-and-Tetris bundles started at $199.99. Supply Co.’s Codex Edition includes a programmable cartridge but does not list Tetris in the box. The different bundles make a direct price comparison imperfect, but the $200 price buys a distinct development-oriented package.
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From DevDay Giveaway to Store
OpenAI says the Codex Edition was first introduced as a DevDay exclusive and describes it as a popular item. GIGAZINE reported that the conference version was given to attendees at OpenAI’s developer conference on September 29, 2026, the day ModRetro announced the collaboration on X. OpenAI later introduced the retail version as “back with a new look” and said it was available “by popular demand.” Those are the companies’ descriptions; they do not disclose demand figures.
The sale also fits OpenAI’s stated expansion of Supply Co. beyond employee merchandise. The company says the shop’s next phase will include collaborations, experiments and physical expressions of its research. The Chromatic connects that retail strategy to Codex: the console is a ModRetro product, while OpenAI supplies the software workflow and sells this edition through its shop.
The product page listed shipments to the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union. A Codex Edition carrying case costs $35, and an extra Codex Cartridge costs $50; both are sold separately through Supply Co., according to OpenAI. The additional cartridge includes an activation code for Developer-Mode, which the page says is limited to two devices and exclusive to the Codex Edition.
Sales, Stock and Support Details
OpenAI has not disclosed how many units were produced or sold, so the “Restock soon” notice does not establish how quickly or in what quantity the first batch sold. The November 19 date was described as expected, and OpenAI says restock dates may change. It is also unclear whether the listed date applies to every shipping destination or whether further stock will follow.
The product page says the Codex Edition has no returns for non-defective items. Warranty and support are handled by ModRetro, not OpenAI, according to the listing. The available material does not detail the warranty period, how long the cartridge activation or software workflow will be supported, or whether the plugin and development steps may change.
OpenAI’s promotional examples and published games show what the workflow can produce, but they do not establish the time, skill or number of prompts needed to make a finished game. The company has also not published independent testing of the claims about the handheld’s performance or the Codex tools’ reliability.
The Expected November Restock
The next stated milestone is the expected November 19 restock on Supply Co. OpenAI advises that the date can change, so buyers should check the product listing for current availability rather than treat the estimate as guaranteed. The store’s listed shipping regions and separate accessory prices provide the current purchase details.
For owners, the next steps are to update the Chromatic, activate Developer-Mode, install Codex and the plugin, and test a game before writing it to a cartridge. Because writing can erase the existing game and saves, OpenAI’s warning is relevant before users flash a ROM. Whether the release becomes an ongoing product line, and how OpenAI measures interest in the Codex workflow, has not been announced.
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?
Users describe a game, then use Codex with the ModRetro Chromatic plugin and GB Studio to refine its art and game logic and build a ROM. They can test the game on a computer or write it to the Codex Cartridge to play on the handheld.
When will the Codex Edition be back in stock?
On November 10, 2026, Supply Co. listed an expected restock date of November 19. OpenAI says restock dates may change, and it has not disclosed how many units will be available.
What happens when a new game is written to the cartridge?
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, so users should account for that before writing a game.
Where can customers buy it, and who handles support?
The Codex Edition is sold through OpenAI’s Supply Co. and is listed for shipment to the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union. OpenAI says ModRetro handles warranty and support; non-defective items cannot be returned under the product terms.
Source: ThorstenMeyerAI.com
