Players build simple structures by pointing and dragging living, bouncing goo balls. These spherical wonders extend a few arms to their closest neighbors, becoming rigid when the Remote button is released. Gamers have to figure out how to build bridges, towers, and other structures without toppling them over, all while trying to use as few balls as possible. In the end, they're trying to lead the remaining balls to a mysterious pipe that sucks them away at the end of the level.
I tried the action-puzzler at the Nintendo Media Summit and am anticipating its release sometime this year. (Developer 2D Boy says its work will be complete in the Summer, and Nintendo will schedule the release after that.) World of Goo felt great and could be poised to be an indie game that crosses over into commercial success.