Megaminx This is simply great: it runs beautifully, no room blocks only when it is turned, it is neither too big nor too small for a perfect grip in the hands, like all the Rubik's cube. Having already the Rubik's cube to 6 faces of the 2x2x2 5x5x5, I wanted to try a different form of the cubic. I immediately appreciated this 12-sided; the first 3 days, I could not let go because I was so happy to have a new challenge ahead of me. The first time, it took me a good 3 hours of patience before you can put it back in order and now I try to beat my time records: now I finished in 7 minutes. Great product, solid and very fun for fans of Rubik's cube ... For those who have never touched a Rubik's cube of their lives, I do not advise their immediate product because of its complexity but I highly recommend them 3x3x3 trying to start.