Really clever and the boys ages 5 and 7 loved them!
My grandchildren, 4 and 6, love this. It was inexpensive, but it exercises their creativity. They show off every monster they make, and the laugh at each other while they are creating them.
Gave as a gift. Don’t know results
My 5 year old LOVED this and played with it for days. Did eventually have to throw the putty away after it got caught on our furniture and sticking to some clothes (more my fault for not supervising closer) but kept all the monster pieces to play with our play dough.