Color Toggle

Simple and fun, yet challenging, game. Flip tiles until they're all white.

Click any tile to reverse it's color and the color of it's adjacent tiles. Keep flipping tiles until you gotten them all to be white. Sounds easy but it's very challenging. Two levels: easy (3x3) where the tile you click and the ones on each side of it flip, and hard (4x4) where the tile you flip and the ones on each side and corner of it flip.