You've mastered the Rubik's Cube. You can do it in your sleep. In fact, you do it in your sleep -- every night, in your dreams. Are you ready to take the next step? Like no other cube before, the 5x5 is a must-have for the true Rubik's aficionado! Rubik's Cube 5x5 is the most complex of all Rubik's Cube levels. Its siblings and predecessors bow down to the challenge this one introduces to the user. Newly tooled and released, this is a long awaited puzzle for Rubik's fans looking for a piece of nostalgia and those who have just learned how fun Rubik's products can be.