Protologic

In this simple yet addictive game you will have to move marbles of various colors on a game board. The slots for the marbles are organized into pyramids; there is one main pyramid in the center and one or more supplemental pyramids around it. The game starts with the main pyramid fully filled with randomly shuffled marbles. Your goal is to move the marbles back and forth between the pyramids so that all marbles in the main pyramid are sorted by color (all marbles of the same color are on the same row).