Drag your finger from the left to the right - this way you connect the elements into one large element. When you release your finger, this large element rotates as a whole by 180 degrees.
The goal is to match all possible elements by using this method. You are playing against the time. If you remove more than 3 elements in a row you will gain 1 seconds (more time) per element.
But every stage needs to clear more elements and you only get 40 seconds more for each stage, so it get's quite hard :-)
The overall goal is the most important of the world: Highscore!
Beat your friends!
To master this game you will need to combine very fast and think logically to find the most effecient way to solve the stage.