Ryuo in your browser

Ryuo also runs in your browser at ryuo.ai/studio. It's the same studio as the desktop app, made for web games: 3D games with three.js and 2D games with Phaser. You don't install anything, and the game you make runs right in your browser tab.

Start with your ideaCopy Anchor Link

Open ryuo.ai/studio and describe the game you want to make. You don't need an account for this part: Ryuo talks the idea through with you, asks what matters (the genre, how it plays, how it looks) and suggests a 3D or 2D start.

You get a few messages before you sign up, enough to shape the idea.

Sign up and buildCopy Anchor Link

When the plan is ready, Ryuo asks whether you're ready to build. Say yes and the New game window opens, asking you to sign up or sign in. Your conversation is kept while you do. When you come back, the New game window opens again: pick 3D or 2D, name the game and create it. Ryuo sets it up in a few seconds, and your conversation moves into the game so you can ask Ryuo to build what you planned.

From then on it works like the desktop app: the game appears in the Web tab, Ryuo writes the code, play-tests the game and shows you what changed. Credits and plans are the same as on the desktop.

Good to knowCopy Anchor Link

• Use Chrome, Edge or Brave. The studio runs best in Chromium-based browsers. Safari and Firefox have limited support, and some privacy settings that block third-party cookies (Brave's shields, for example) can stop the game from starting; allow them for ryuo.ai if the game doesn't load.
• Keep the tab open while Ryuo works. The game, its development server and Ryuo's work all run inside your browser tab. Closing or reloading the tab stops whatever Ryuo is doing.
• Your games are saved in this browser. Projects are stored in your browser's storage on this computer. Clearing your browsing data for ryuo.ai removes them, and they don't follow you to another browser or computer.
• Web games only. Unreal Engine, Godot and Unity projects need the desktop app.
• Some tools need the desktop app. In the browser Ryuo can't use Blender. It still checks generated and downloaded models and makes them lighter and the right size (fewer triangles, smaller textures) before adding them to your game, but it can't rebuild a model's shape or bake new textures. It also can't run Claude Code and Codex on your computer.
• Web pages open in a browser in the cloud. When Ryuo studies a reference page or gameplay video, or reads documentation, it uses that browser, which needs a Ryuo account. That browser can't open pages on your computer or local network, such as a game server you run yourself.
• Animations are recorded in your tab. When you ask for an animated title card, turntable or cutscene shot, Ryuo writes it as a page of your game and records it to a video in your Generations. Keep the studio tab in front while it records, since browsers pause animation in background tabs. The video has no sound.
• Screenshots show the game's canvas. When Ryuo takes a screenshot of your game in the browser, text and buttons drawn in HTML on top of the game (like the score) may not appear in it.

Share the gameCopy Anchor Link

Sharing a game from the browser isn't available yet. Games made in the desktop app can be shared with a link.