DubBooth is a free dubbing game that runs entirely in your browser. Hear a line from a real scene, say it in your own voice, and get three scores — rhythm, duration, coverage. Your takes are stitched back into the scene and the finished dub exports as a video, all client-side. Play 60+ community scenes, import your own packs, or turn any video into a playable scene with the AI pack maker. No download, no account, and your mic audio stays on your device.