Turn off every tile.
Tap a tile — it flips its neighbours too.
Flip It is a free online Lights Out puzzle. Tapping a tile flips it and the four tiles directly above, below, left and right of it — never the diagonals — so every move undoes part of the last one. Clear the grid by turning every tile off, in as few moves as you can. Every board is generated solvable, and the game works out the shortest possible solution so you can see how close you got. No levels, no signup.
How to play