One tile in the grid is a slightly different shade. Spot it and tap it before the timer runs out. The grid grows and the difference shrinks as you climb.
Reflex
Easy
about 2 min
How to play
One tile is a slightly different shade — tap it.
You are racing a timer, and the difference shrinks as you go.
Spot the odd tiles to clear the level.
Play free in your browser — the first levels need no account.