We chose "Kre-o" chosen because of Star Trek toys. The quality is acceptable and definitely playable for this price. However, you can see some parts of small flaws (eg not fully cast stones) or missing stickers that are listed in the plan. Thus one can live well - a comparison with the well-known competitors (L ...) it is not, however! Still no reason to not buy more kits from this series :-) fun it is to all children, though the stones not held together as tight as one would expect .... The figures you realize it most clearly , Since you have trouble until they can finally take place ....