Turnabout, also known as I.Q.: Intelligent Qube in North America, is a puzzle game for the Sony PlayStation 1, released in 1997. Developed by Sony Computer Entertainment, it challenges players to outwit by clearing a series of blocks on a virtual stage. As the blocky formations advance towards the player, they must quickly determine which blocks to eliminate and which to transform to avoid them falling off the stage's edge. This strategic and addictive game requires sharp wits and swift reflexes, offering a cerebral twist on the traditional puzzle genre, testing both intelligence and agility.