What is the Rubik's Edge Cube? It's one layer of a standard 3x3x3 Rubik's Cube and it's trickier than not looks. Mix it up and try to get the colors realigned so that each side has only one color. The slim profile makes it a great "go anywhere" puzzle. Fiddle with it and try to form some cool shapes! 1 Player. Ages 6 and up.