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TL;DR
OpenAI began selling a $200 ModRetro Chromatic: Codex Edition on November 9, 2026, with one programmable cartridge designed for games built using its Codex coding agent. The product page showed “Restock soon” on November 10 and listed November 19 as the expected restock date. Sales totals, inventory and whether that date will hold have not been disclosed.
OpenAI began selling a $200 ModRetro Chromatic: Codex Edition on November 9, pairing the retro handheld with a programmable game cartridge and instructions for building games using its Codex coding agent. The product page showed “Restock soon” on November 10 and listed November 19 as the expected restock date; OpenAI says dates may change.
The edition is sold through OpenAI’s Supply Co. store and includes the transparent-shell Chromatic handheld, one programmable Codex Cartridge and three AA batteries. Supply Co. lists a 2.56-inch, 160-by-144-pixel IPS display, compatibility with Game Boy and Game Boy Color cartridges, and dimensions of 5.2 by 3 by 1.2 inches. The console can also use ModRetro’s separately sold Rechargeable Power Core.
OpenAI’s proposed process starts with a plain-language game idea. Users install the Codex app and the ModRetro Chromatic plugin, then use Codex alongside GB Studio, a visual editor for Game Boy games, to develop and refine the game, build a ROM and test it. The finished game can run in a browser emulator, stream from a computer to the handheld, or be written to the cartridge for play on the device.
OpenAI’s setup guide says users must update the handheld’s firmware and use an activation code to enable Developer-Mode. The company’s developer post demonstrates the plugin with a game about a beaver building a lodge, including requests to create sprites and edit collision maps. OpenAI warns that writing a new ROM erases the cartridge’s existing game and may erase its saves; its installer does not back up the cartridge.
Can OpenAI’s Prompts Become Cartridges on the Chromatic Codex Edition?
OpenAI paired a retro handheld with a Codex-assisted game-making workflow. The idea is to turn plain-language prompts into games that can be played on a cartridge, but setup and data-loss risks matter.
What comes in the box
The retail bundle combines ModRetro hardware with one programmable cartridge.
Chromatic handheld
Transparent-shell console with a 2.56-inch IPS display and compatibility with Game Boy and Game Boy Color cartridges.
Codex Cartridge
One programmable cartridge for games built with the Codex workflow. Three AA batteries are included.
Extras cost more
The carrying case and an additional Codex Cartridge are sold separately.
From prompt to handheld
OpenAI’s process combines Codex with GB Studio, a visual editor for Game Boy games.
Start with a plain-language idea, then install the Codex app and Chromatic plugin.
Use Codex alongside GB Studio to develop the game, edit it and build a ROM.
Test in a browser emulator or on the handheld, then write the ROM to the cartridge.
What buyers should weigh
The edition adds a game-making route, but it is not a plug-and-play process.
- Turn a written idea into a game for dedicated hardware.
- Play finished games in a browser, stream from a computer or load a cartridge.
- OpenAI has published Codex-built games as examples.
- Setup requires firmware updates, an activation code, Codex and the plugin.
- Writing a new ROM erases the cartridge’s existing game and may erase its saves.
- OpenAI’s installer does not back up the cartridge.
Restock details remain uncertain
The product page showed “Restock soon” on November 10 and listed November 19 as the expected date.
A Console That Promotes Codex
The console is both a gaming product and a physical demonstration of Codex-assisted software creation. Rather than selling only access to an AI coding tool, OpenAI is presenting a complete route from a written idea to a game running on dedicated hardware. That could make coding feel more tangible to hobbyists and give users a reason to try Codex’s development workflow.
The practical value will depend on how well that workflow works for people who are not already comfortable with game development. The cartridge also adds a point of friction: users must set up the app, plugin and developer mode, and they risk losing a game or save when rewriting it. The launch page does not provide sales figures or inventory, so the early “Restock soon” status cannot show how broad demand is.
For buyers, the price merits comparison. On November 10, ModRetro listed a transparent Chromatic bundled with Tetris for $149.99, while other Chromatic-and-Tetris bundles started at $199.99. The Codex Edition costs $200 and includes a programmable cartridge, but its listing does not mention Tetris. The editions therefore differ in their listed contents, not just their branding.
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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 the retail model as returning “with a new look.” GIGAZINE reported that a DevDay edition was distributed to attendees at OpenAI’s September 29, 2026, developer conference, when ModRetro announced the collaboration on X. OpenAI’s developer forum introduced the retail sale with the phrase “By popular demand.” These are the companies’ and publishers’ descriptions of the earlier release; OpenAI has not published attendance demand or sales data.
Supply Co. started as a small employee merchandise shop, according to OpenAI’s explanation of the store. The company says its next phase includes collaborations, experiments and physical products connected to its research. In this case, the hardware is made by ModRetro, whose Chromatic is designed to play Game Boy and Game Boy Color cartridges. ModRetro says its FPGA-based system plays original cartridges “with 100% accuracy”; that is the manufacturer’s claim.
OpenAI says it has published 13 Codex-built Chromatic games that can be played in a browser or downloaded as ROMs. The product page spotlights a tile-matching puzzle, a dungeon crawler and a rhythm game featuring the Codex mascot. Those examples show the sort of games the company is promoting, but they do not establish how easy or reliable the tools will be across other projects.
“with 100% accuracy”
— ModRetro
Inventory, Demand and Workflow Limits
OpenAI has not disclosed how many units were made, how many sold or what prompted the store’s restock notice. The November 19 date is an estimate on the product page, and OpenAI says restock timing can change. It is not clear whether the first listing sold out, was paused for another reason or reflects a limited initial allocation.
The available information also leaves practical questions unanswered. The source materials do not give benchmarks for how long Codex takes to produce a playable game, how much human editing is typically required, or how the tool performs on projects beyond the published examples. The store’s stated return policy excludes non-defective products, while warranty and support are handled by ModRetro rather than OpenAI.
Shipping is listed for the United States, Canada, Australia, New Zealand, Japan, the United Kingdom and the European Union. The listing does not establish whether availability will expand to other markets. Buyers should also note that the $35 carrying case and $50 extra Codex Cartridge are sold separately through Supply Co., according to OpenAI.
Watch the November Restock
The next stated milestone is the expected November 19 restock. OpenAI has not confirmed a quantity, a time of day or whether the date is fixed, so buyers will need to check Supply Co. for the current listing. The company’s notice says timing can change.
For customers who get the device, the immediate next steps are firmware updates, entering the activation code, installing Codex and adding the Chromatic plugin. OpenAI’s setup materials also warn users to protect any game or save they want to keep before writing a new ROM to the cartridge.
Further detail on sales, stock and the retail rollout has not been announced. The launch’s broader test will be whether buyers use the handheld as a way to make their own games with Codex, rather than treating it simply as another retro console.
Key Questions
What is the Chromatic: Codex Edition?
It is a $200 ModRetro Chromatic handheld sold through OpenAI’s Supply Co. It comes with one programmable Codex Cartridge and is marketed as a way to play games created with Codex on the handheld.
How do Codex prompts become games on the cartridge?
OpenAI describes a workflow using its Codex app and ModRetro Chromatic plugin, with GB Studio for refining the game. Users build a ROM, test it in an emulator or on the handheld, then write it to the cartridge.
When will the console be available again?
On November 10, the product page said “Restock soon” and listed November 19 as the expected date. OpenAI says restock dates may change.
Can writing a game erase saved data?
Yes. 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.
What is not known about the launch?
OpenAI has not disclosed production numbers or sales totals. It is also unclear whether the November 19 date will hold or how much setup and editing most users will need to make a playable game.
Source: ThorstenMeyerAI.com
