A free program for Android, by Balloon Island.

Maya Stones is a bubble shooting game that will take you to the ancient city of the Mayans.

In this place, you will be confronted with an army of random colored bubbles that form a variety of shapes to allow strategic targeting on your part. One of the earlier shapes, for example, is a Merkabah. You will have to shoot from a fixed point at the center, target the bubbly mass according to the color in your gun – align it with the correct hue, then shoot. As you keep shooting and popping groupies, you will help stem the reproduction. Letting it get out of hand will kill you – and you will lose the level.

There are 4 stages and 240 levels.