The core of the game is played by the elimination of the stars to get points model. In simple terms is "eliminate", there is no time limit, but each have a target score, you also eliminate the stars, the more you can get, the last remaining stars, the more the more rewarding.
Elimination method is a piece of the same color, click on the box or the stars, it can be eliminated. The more squares while eliminating higher scores. You can also try to make all the tiles are eliminated, there will be more.