We have improved the smoothness and performance of this #1 type trivia games. The Arcade mode is so amazing, Challenge it! We will keep improving our game, more features are coming soon. Any advice and suggestions are appreciated! Features: Easy to Master Game Center Supported Social Share Supported Tap the BLACK Tile, DON'T TAP THE WHITE TILE. This is the only rule in this addictive game. Is it easy? Everyone can handle it, but not everyone can handle it well. What about you? There are six modes in the game: -Classic mode, reach the target as soon as possible. -Arcade mode, try your best to tap the BLACK tiles as many as you can, no time limited. -Zen mode, try your best to tap the BLACK tiles as many as you can in 30 seconds. -Practice mode, Tap keys as the origin melody, make yourself a great pianist! -Challenge mode, black tiles will hide unless you tap the right one. It's a bit difficult, Try it! -Song mode, play with songs in your iOS device. Try it and have fun! Thanks.