How to play

Lanes: D, F, J, K (rebind in Settings). On mobile tap the lanes at the bottom.
Hold notes: keep the key down until the tail ends.
Overdrive: hit white star notes to fill the meter, then press Space (or tap the top half) to double your multiplier.
Rock meter: misses drain it — empty means the song fails (unless No-fail is on).
Pause: Esc or the II button.

Judgments

Perfect (±45 ms), Great (±90 ms), Good (±135 ms). Your combo raises the multiplier up to ×4, and overdrive doubles it to ×8.