There's another game
with the same name and the same principle at this site. The principle is like this: You have a number of creatures of different colors and a diagram where colors are located in a specific order in a circle. You can select pairs of creatures of the same color and make them disappear. However, to pass a level you need to eliminate all creatures on the screen and you don't have a pair for every one. What you need to do is to join creatures together to create new colors. That's where you use the diagram. You can join any 2 creatures whose colors are separated by 1 in the diagram. Joining them you create 1 creature whose color is the one that was between the 2 colors of the creature's "parents". Think well before doing things, before your actions are irreversible..