The structure is in principle simple and the game is fun. Criticisms: The rods are very thin plastic, quite slippery and bend easily or slip out again. If you put the rods in, when the red "sieve" is already attached, the whole structure slides also like to completely down if you do not secure with the other hand. Although the manufacturer recommends to put the bars only through the screen and then to put the whole thing on the green tower, but that makes it much better. The frustet well, is (for an adult who is aware of the problem and how to avoid them) but in the context of what is tolerable. Try, however, children in building the looks but have different ..... However, the game is from the price so cheap that you have to expect a simple quality, so it seems appropriate again. But I would rather have paid a little more and better quality.
Conclusion: Despite the shortcomings a nice game. which promotes the powers of observation and intuition. We must not let frusten only from shaky structure.