World of Goo is a physics-based puzzle video game developed and published by independent game developer 2D Boy. The game was released on Windows and Wii on October 13, 2008, with releases on Nintendo Switch, OS X, Linux, and various mobile devices in subsequent years. 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.