Piano Tiles-Tap The Black Tile

Game rule: very easy: DON'T TAP THE WHITE TILES
Tap the black tiles instead of the white ones. Don't miss out any one of the black tiles. No time limit.
Look your step, don't tap the white piano tiles!
Game modes:
- Classic: test your fast speed
- Arcade: check out the number of the blue squares you can tap rightfully.No missing out!
- Zen: see how many black tiles you can tap in 30 seconds
Game features:
- Easy to play, fun for all ages, a good stuff to kill time

Thanks every game players, any suggest is welcome!