Fez

Gomez was a two-dimensional creature, living happily in his two-dimensional village in a two-dimensional world, until one day he is shown a great secret: the existence of a third dimension. However, something goes wrong, the great Cube explodes, and Gomez wakes up in his room now able to traverse this mysterious third dimension. He is greeted by a curious entity named Dot, who claims to be his guide, telling Gomez that it's up to him to find all the pieces of the Cube, and restore the world before the very fabric of existence collapses.