Free iOS app: Pile
Pile is a fast-paced Puzzle Game that will get you seriously addicted! Line your blocks up and try to make combos to score the most points. But beware, the clock is ticking!
Requirements:
Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad. Requires iOS 5.0 or later.