When playing the game, what you should do is just to merge the block in fibonacci order, like 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377 and so on. The game supports GameCenter and the score depends on how reasonable you can merge the block.
You can tap the gamepad with two holes if you want to play the game which is described on the App Store.