Dont tap the white tiles

Watch your step, DON'T TOUCH ANY WHITE TILE. This is the core rule in this additive game.
Is it easy? Everyone can handle it, but not everyone can handle it well. What about you?
There are two modes in the game:
-Classic mode, get 50 black tiles as soon as possible.
-Arcade mode, try your best to tap the dark tiles as many as you can, and do not miss one.
- New background musics
- New piano songs
- Miscellaneous changes