Rubik's Revenge Cube 4 X 4

During my first solve, a piece popped and the entire thing fell apart. It was very difficult to put back together, so I simply returned. Also, the cube was very tight, and it was very difficult to move layers. I would recommend an Eastsheen cube instead.

The cube was not built very well at all. I had to put it back together twice before I could solve it without it falling apart.

As an 11-year-old, my daughter learned to solve the classic (3X3) Rubik's cube in nothing flat, and so had requested the 4x4 for her 12th birthday. It has proven more of a challenge than she'd expected, and I notice she's not using it as often as I'd anticipated, not carrying it around with her after the first week nor focussing (yet) much on its possible solutions. But when I asked her for comments to enter here, she was very enthusiastic and affirmative. One issue is that she cannot turn it as quickly as the 3x3, not just due to its larger size, but also to the inherent greater stresses in the construction (and good that the product description warns of its comparative delicacy.) But Amazon offers it at a good price (glad to see these puzzles alongside the books and DVDs!) and I expect it will prove a favored occupation on a long train trip we'll be taking soon!

My 12 year old son had mastered the standard 3x3 version long ago. His time at Summer Camp was coming to a close and I was concerned that he would spend his time glued to Guitar Hero, his Nintendo DS or the computer. I wanted something else to engage him. I purchased both the 4x4 and the 5x5 versions of the Rubik's cube. It is a month and a half later and he still is working at the 4x4. It has really engaged him. We also learned that he might be able to use this for this year's science fair project; using math or algorhytms to solve Rubik's cube. Great toy! Good educational link to math and spatial relations.

This 4x4 is really smooth and really fun!! It is also easy to take apart and put back together, but it only comes aprt if you WANT it to come apart. I noticed some people wrote that it "exploded", if that does happen, you can always look up on youtube.com on how to put it back together. It's really easy and really fun. I recomend getting it. It is a perfect addition to any rubik's collection!!