74 Original Songs × 5 Difficulties × 5K/9K Modes
Positive = your input is globally late. Use the calibrator above.
Click a key slot, then press the new key. Conflicts are swapped.
Notes fly from lower-right to upper-left along 15° lanes toward the piano moon. Press the matching key when a note reaches the straight judgment chord on the moon. Two modes:
Keys can be rebound in Settings.