If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
The object of this game is to rotate the Marbles until four Marbles of the same color form the four corners of a square. The square can be of any size and orientation. Tap to rotate the Marbles and click the arrow buttons on the left or right to change the direction of rotation.
This game is played with mouse only.