Pixeltopia has Blop (iTunes Link) in the iTunes App Store for FREE (normally 99-cents) for a limited time.

Blop is an addictive and tricky puzzle game about making shapes with blocks of colored tiles.

Using a combination of skill, planning and luck you must clear away the brown game board tiles in order to complete the levels and be rewarded with an animation.

To master the later levels of the game you must use wit and cunning to correctly place your colored tiles, to avoid getting blocked in.