2D BOY has World of Goo for the iPhone and World of Goo HD for the iPad in the iTunes App Store for 99-cents (2.99 to 4.99 value) for a limited time.

World of Goo is a physics based puzzle / construction game. The millions of Goo Balls who live in the beautiful World of Goo don’t know that they are in a game, or that they are extremely delicious.