You are faced with a board of sqaure cells, alongside blocks which contain a certain numeric value. You must merge these to increase their value, thus increasing your score. These blocks are all some power of 2 (2^n); so you start with 2, then 4, 8, 16, and so on. Most of the time, it is a 2 block that spawns. However a 4 can also spawn, this is somewhat uncommon. The player can swipe in any up/down/left right direction. Swiping moves every block on the board. The game is lost if the board is full of blocks, and none other can spawn. The game is won by merging a sufficiently large block. This value depends on the type of game mode being played (1024 for 3x3 vs. 16394 for 6x6)