Rosebud AI alternative for games made with ChatGPT or Claude
This page is written by the KUMODeck team. It compares KUMODeck with Rosebud AI for a game you make with an AI, using facts from Rosebud's official pages.
Rosebud AI is a game maker in the browser: you describe a game, and its own AI writes the code, art and sound, then you publish it on Rosebud. KUMODeck works the other way round. You make the game with the AI you already use, such as ChatGPT, Claude, Claude Code or Codex, and that AI puts it online with KUMODeck, along with sign-in, cloud saves and multiplayer rooms when the game needs them.
Both are reasonable choices. This page lists the facts so you can pick by how you like to make games. Rosebud's facts come from its official pages, checked on 2026-10-29; its own pages are authoritative.
At a glance#
| KUMODeck | Rosebud AI | |
|---|---|---|
| Where you make the game | with your own AI: ChatGPT or Claude on the web, or Claude Code, Codex and other agents (Start here) | in Rosebud's editor in the browser, by describing it to Rosie, its default AI, or a premium model (AI game creator) |
| What the AI work costs | your plan with that AI; KUMODeck bills only the parts your game uses | credits: about 2,000 per edit with Rosie and about 20,000 with a premium model (pricing) |
| Plans | no free tier: at cost from the first request, from a prepaid balance | Newbie (free) with 8,000 credits, refilled every week in eligible regions; paid from $15 a month (Indie Dev) to $100 a month (Scale) |
| Code | the files your AI wrote are yours, in the conversation or your folder | JavaScript on Three.js; edit it in the browser from Indie Dev, download it and export for Windows from Pro ($50 a month) |
| Publishing from a coding agent | over MCP or the KUMODeck CLI, after you sign in once in your browser (Use from an AI agent (MCP)) | a free hosting CLI: no account needed to publish, and you claim the game within an hour or it is deleted (free game hosting) |
| Test before going live | a test version on a --dev address; the public address waits for you to press Publish | a live preview in the editor; from the hosting CLI, games are unlisted (anyone with the link can play) and updates go to the same link |
| Size of a game | up to 100 MB per file, with no limit on total size (Hosting & deploy) | from a coding agent: 10 MiB zipped, 50 MiB unzipped, 500 entries (hosting guide) |
| Sign-in, saves, multiplayer rooms | built in (Authentication, Cloud saves, Multiplayer rooms) | in the editor, multiplayer comes already set up (vibe coding tool); games from a coding agent are served as static files |
| Art and sound | made by your AI, or files you upload | generated in the editor for credits: images, sprite animations, sounds, skyboxes and 3D models |
Sources for Rosebud AI, checked on 2026-10-29: Rosebud pricing (plans, credits per edit, private projects, code download, Windows export, commercial rights), AI game creator (making games in the browser, Three.js, art and sound), vibe coding tool (code tab, multiplayer set up in the editor, one-click publishing), free game hosting and its hosting guide (the CLI, claiming within an hour, unlisted games, size limits, static files). Prices and limits can change; Rosebud's pages are authoritative.
Where KUMODeck is different#
You keep the AI you already use. If a game is already half made in a ChatGPT or Claude conversation, you do not move it anywhere. You connect KUMODeck to that AI once by signing in in your browser, then ask in the same conversation. Your AI sends the files, including big ones through an upload page, and gives you a test link (Publish a game you made with ChatGPT). From Claude Code or Codex, your AI sends the folder it wrote, with no access token to create or paste (Deploy a game from Claude Code without API keys).
A test version first, then your press. Your AI can put up as many test versions as you like, on an address with --dev in it. The address everyone can open waits for you to press Publish on a KUMODeck page, every version is kept, and "roll back to the previous version" switches back. A deploy whose files contain a secret key is stopped before it goes up (Secrets in deployed files).
The backend comes with the game. Players can start as guests and sign in later without losing progress, saves have a version per slot so two devices cannot overwrite each other, and rooms come with quick match, 6-letter room codes and reconnects. You ask your AI for each part in plain words, and it turns the part on and writes the code: Add login and cloud saves, Make a Claude Code game multiplayer. Unity and Godot web exports run as they are (Unity games, Godot games).
You pay for what the game uses, not per edit. The AI work happens under your plan with ChatGPT, Claude or another AI. KUMODeck takes what your game uses from a prepaid balance at cost, so a busy month cannot produce a surprise bill. The estimate on Pricing for a game with 100,000 plays in a month is about $1.98 at list price. Your own domain costs $0.11 a month per domain (Custom domains).
When Rosebud fits better#
- You do not use an AI for code yet and want one place in the browser where you describe a game, see it running and keep changing it.
- You want art and sound made in the same place as the code: sprites, animations, skyboxes, sounds and 3D models, paid with the same credits.
- You want to start without paying. The Newbie plan starts with 8,000 credits and no credit card, and in eligible regions they refill every week.
- You like starting from other people's games. Rosebud has templates and lets you remix published games; private projects and turning off remixing are on Indie Dev and higher.
- You want a desktop build. Pro and higher can download the project code and export a Windows build that you can publish on Steam.
- You only need a static game online for free. Rosebud's hosting CLI publishes a build folder without an account, as long as it fits in 10 MiB zipped and you claim it within an hour.
You can use them together#
The code Rosebud writes is JavaScript that you can read, and from Pro you can download a project's code. If what you download is a folder of web files, your AI can put it on a KUMODeck test version, where you check that it runs before you press Publish, and add sign-in, cloud saves or rooms to it later (Hosting & deploy). The other way round also works: a game made with your own AI is a folder of files that you can host wherever you like.
Try it#
Anyone can sign up. Then add funds to your balance or enter an invite code, and your AI can start publishing. Start here connects your AI in a few minutes, and the questions and answers cover the common questions about cost and keys.