The goal of the game is to match 4 blocks of the same color. Remove blocks by matching the block of the same color vertically or horizontally and gain points. Get as much points as you can before the time runs out.

The blocks dictate the available movement. You can rotate the movement direction whenever you get stuck. Think carefully before rotating the direction as it will reduce the time remaining. But then again, maybe you should push that rotate button more often as removing block will increase the time remaining.