In this game of planetary color matching you must click on a group of two or more colors in order to destroy the planets and gain points. Try to destroy all of the planets for a bonus. You need use some skill in knowing when to blow up what group. The large of a group you get, the more points you get in one wave of points. There are three different difficulty levels for you to choose from and try. Each difficulty level has another color thrown in to make it harder to get matches. The fourth play mode is called slider, in this mode the planets slide upwards as you destroy then getting closer to the top. If they reach the top then the universe explodes. So try to keep that from happening.