FEZ is a game for XBOX LIVE ARCADE […]
In it, you play as Gomez, a 2D creature living in what he believes is a 2D world.
Until a strange and powerful sentient artifact reveals to him the existence of a mysterious third dimension!
FEZ is a 2D platformer set in a 3D world.
The world is 3D, but you always play from 2D perspectives.
Fez actually brings about the concept of dimensions, and below is a video of Carl Sagan,
American astronomer, astrophysicist, cosmologist, author, science popularizer, and science communicator in astronomy and natural sciences
So yes hes awesome, and his video, though 2 years old, may just help you understand the meaning of a four-dimensional universe.