Tecla Run
The Chrome dinosaur, except the level is a song: the obstacles are the notes. Each one sounds as Tecla passes over it — half note, quarter, a pair of eighths — so clearing them in time is playing the tune.
The round: quarters, eighths and a half note to breathe. Space or arrow up; on a phone, tap the board. The notes are spaced by their value: two quarters in a row are two jumps on the beat, a half note lasts twice as long, and eighths come beamed in pairs — one jump, two sounds.