The box indicates that it is not more difficult than the 3x3 is still more complicated to resolve. The 3x3 is solved approximately with 5 short maneuvers to remember, 4x4 with 7 long enough maneuvers, so we think more and the game lasts longer. As with the 3x3, the box contains a booklet with the movement (no need to rack their brains to invent them). 4x4 comes with 2 separate booklets and small sizes, one in black and white contains movements, the other in color contains the result of movements before and after operation, it is difficult to consult with the added cube hands. The false perspective drawings is not the best choice, they are much less than those comprising the booklet of 3x3. The cube rotates with difficulty at first but becomes more fluid movement gradually dismantling attention if mechanics is too forced. Following the natural 3x3, it also simulates the 2x2. Great for fans of the genre.
