I want to introduce a simple, aesthetically pleasing and fun game called Stack. Rule is simple: there are blocks coming from 2 directions in a 3d environment, when user taps the screen, the block will stop to pile up. Stack up the blocks as high as you can by tapping the screen at the right time to get a high score.
The game mechanism is simple, and people love stacking blocks. This game is addictive, my original goal was to score over 50, once my score reached, I got even more motivation to continue to play.