The Game tubes are not suitable for adult cats - therefore I have equal omitted because I would rather give something more lying area my cats. The cubicles are large, but a more stable metal or wood had been there certainly better. Even with my small cat (about 4,5 kg) they have deforms very quickly. The cave is also quite small - but as my two are not cave seater anyway, which is to get over.
The Kratzbau supposed to replace my current freestanding, in largely equal Happypet-scratching post. Unfortunately this was not possible, since it is, as already described, are two separate scratching posts, which have no connection and, therefore, the required stability was not given. My two are active cats, who sometimes at full speed (6 kg and 4.5 kg) jumping on the scratching post. The case remains the part, is illusory. So I keep Happypet and erected the two parts of the new scratching post in two different rooms separated in corners - so they are well used by the cats.
Conclusion - In principle, not bad - but suitable as large climbing and playscape as delivered at best for kittens or very old cats, unless additional connections between the floorboards and the wall will be created. The scratching post, although corresponds to the description, but can not be so used in my opinion, without further measures, as suggested by the images.