Goo Ball is a Steam-Exclusive character in Super Meat Boy. It is unlocked by typing in "ballgoo" and selecting a character. It is basically a Steam version of Gish, which is exclusive to the Xbox 360 version of the game. He acts just like Headcrab. He sticks to walls and slides on ceilings when holding the run button. He is a reference to another indie game, "World of Goo".