About this game
Rotate 2x2 blocks to sort scrambled numbers into ascending order across 27 brain-teasing levels.
How to play
How do you play Twiddle?
Twiddle gives you a grid of scrambled numbers. Tap any cell to rotate the 2x2 block anchored there 90 degrees clockwise; long-press or right-click to rotate counter-clockwise. Keep rotating until the numbers are in ascending order, lowest top-left to highest bottom-right.
Is every Twiddle scramble solvable?
Yes. For grids 3x3 and larger, every arrangement of the numbers is reachable because a 2x2 rotation is a 4-cycle (an odd permutation), so both even and odd permutations can be produced. The puzzles here are scrambled with legal moves, guaranteeing a solution.
Is Twiddle free to play?
Yes, Twiddle is 100% free to play in your browser with no download or signup. Progress is saved automatically on your device.