My 4 year old with her short attention span opened this today and played for over an hour. She usually gives up quite easily and this is the first time I've seen her manipulate something over and over again to get it right. I think the reward for her was the Knight and Princess meeting for a kiss each time. Great fun for me too. Unfortunately it arrived with a chip in the bottom plate which doesn't effect use. Obviously a manufacturing fault, not one of Mighty Ape.