Walls play the melody — compose a course. Bumpers boost, ✖ splitters multiply the ball, portals teleport, ☠ kills, 🏁 wins.
Upload a track and every bounce plays the next slice of it — the ball performs your song. When bouncing gets fast, it auto-flows into normal-speed playback.
auto-hype = captions like “LAST RING 👀” fire automatically at tense moments. loop = auto-restart after the finale (leave it recording, farm clips).
⏺ Record captures the canvas + audio at 60fps. Saves .mp4 on Safari/iPhone, .webm elsewhere (CapCut & ffmpeg both import webm fine). Overlays are baked into the video.