OhMyGame

OhMyGame is a free, open-source desktop app from White Tower AI that puts the main jobs of making a small game in one place: a design doc, a canvas for concept art, video, 3D models and audio, the code, and a playtest. You describe a game, and an AI agent drafts the design, generates assets, writes a normal web project in Three.js, React Three Fiber or Phaser, then runs the game in a preview and plays it to look for bugs, according to the project's README on GitHub. Signing in lets you publish to a link anyone can play in a browser; republishing updates the same link.

No model is bundled. The README says it connects to 40+ language-model providers through the open-source Pi coding agent, or you can hand the conversation to a Claude Code, Codex or OpenCode install you already have. Images, video, 3D and audio each need a matching provider, such as Meshy or Tripo for 3D. The app can also run as an MCP server so outside coding agents can use its canvas and playtesting.

The beta 5 releases (from October 29, 2026) added interactive stories and plugins for Godot, Unity, Unreal Engine, Cocos Creator, Blender, Aseprite and Tiled. The app is free; the cost is whatever your model providers charge. AIGamer hasn't tested it, and the project calls itself a beta with rough edges.