Twiddle is a tile re-arrangement puzzle, visually similar to Sixteen. You are given a grid of square tiles, each containing a number, and your aim is to arrange the numbers into ascending order.
In the game, your move is to rotate a square group of four tiles about their common centre.
Game features:
1) Easy operation for rotation numbers
2) Undo operation
3) Re-start game
4) 8 game levels
5) Score list
6) Replay game