Vibri is a vector-drawn rabbit who travels along the waveform of a music track, navigating obstacles that appear in rhythm with the song. Taking a hit causes Vibri to devolve—first into a frog, then into a helpless worm—and each impact makes the stage shake more violently, compounding the challenge. Too many hits end the level in failure. Clearing obstacles cleanly triggers Vibri's evolution into an angelic form that amplifies the run's score multiplier.