World of Goo has finally hit the Android Market, allowing a whole new userbase to get in on the sticky tower-building action. 2D Boy's physics-powered puzzler originally came out on PC and Wii, but the iOS version showed the gameplay to be a natural fit for a touchscreen. The game involves directly manipulating cute little blobs of goo into complex structures that can reach the goal, and your fingers make for the perfect tools. There's a demo on the Android Market, with the full version going for $2.99, though be quick — the price goes up to $4.99 on December 5th. It's available for devices running Android 2.2 and up, including the Nexus One and HTC Desire.