The monsters are pretty easy to do. To make one, it is necessary 2-3 eggs. After 10/15 minutes heating gelatin becomes liquid and by pressing the pump of the latter pours in the mold.
The mold is then placed in cold water and after five minutes can unmolding. The monsters are fun, they have the details (tentacles, antennae ...) For some, one can add the liquid inside (it's a bit "yuck" but it pleases the youngest!)
The factory is quite fragile, it is necessary to pay attention to sudden movements. I'm afraid she does not take time.
She is very greedy in batteries, indeed it takes 4 LR20 batteries, which are not provided with the game.
There are only 20 eggs in the box, you can not do that 7/8 monsters. One can possibly reuse monsters to make others. But this only works for a certain time. We must plan refills which are quite expensive.
My daughter loved the monsters do, much less me. Sticky / disgusting side liked him.
It is a "creative" game for children. There is nothing educational, just a playful side.
Anyway defects that were mentioned in other reviews had to be reworked by Giochi Preziosi now because the monsters are feasible and on the first try. (See my photos)