We bought the Ritterburg our son at Christmas. The bad reviews I can not confirm. With us, the wall parts are not under tension as described in the other reviews. Everything fits together perfectly. However, there is also with us a couple of parts that wiggle a bit, however, is not so tragic. Permanently cancel they do not. In addition, many animations make such a lift can be pulled up and down with a crank, a gate that can be opened with a wheel, a device with the stones on the enemies fall this deficiency up for it. However, the construction already requires a little time and is not immmer quite as easy if you've had no experience with castles. Our 7-year-old has some parts of it but also set up alone. A 4-year-old is, however, not create that alone. Because you for some parts already needs to force them to stick together. So our boys 5 and 7 years have a lot of fun with this castle and can really spend hours playing with it (which in other toys does not always work).