World of Goo is a puzzle video game developed and published by independent game developer 2D Boy. The game was released on Microsoft Windows and Wii platforms on October 13, 2008, with releases on Nintendo Switch, Mac OS X, Linux, and various mobile devices in subsequent years. A physics-based puzzler, World of Goo has the player use small balls of goo to create bridges and similar structures over chasms and obstacles to help other goo balls reach a goal point, with the challenge to use as few goo balls as possible to build this structure.