The goal of each area, aside from collecting gems, is to scale to the top of the island. Islands are made out of a series of themed platforms covered with associated enemies. These areas are scattered with items, mostly food, that will increase your score. Sometimes a rainbow will dislodge hidden food or an enemy will drop some when killed. If your score is high enough you will start to send out more than one rainbow at a time. At the end of each island there will be a boss. If you fulfilled certain requirements in the level you may get a special item.