Cross the much-beloved game Tetris with Jenga and what do you get? Stack, a simple but compulsive app game for mobile phones which requires players to stack small boards on top of one another. While the idea may be simple, the game is harder than it looks, as the boards coming from the sides of the screen must be stacked precisely on the current stack by tapping on the screen.
If you mis-time this and some of the board hangs over the edge, that portion falls off and the incoming piece shrinks to that size.
Stack is available for free with ads for iOS 6 or later and Android's 3.0 version or later. An in-app purchase option will remove all ads.