I find this even more addictive and therefore more educational toy then LEGO. It was bought for 3 and 5 year old. The š year old liked it, so but liked to take the parts in his mouth. SO Either make sure you are around or buy for older kids. If the metal magnetic ball is swallowed I guess it is more dangerous than a LEGO cube - but maybe not ...
Anyway 1 year later and the kids quiet play with it, together with Their Father. At the end in this set there are a lot of parts but maybe not enough to create really funny things - then I would try to see if the PRO versions wold not be more suitable.