Very fun, my kids 8-1 love them. This is the one toy they are still playing with on a daily basis after the holidays. Also great for PT purposes for kids and sturdy enough for adults. My husband is 6’3 and plays with the kids on it all the time. Only warning though, we have it on a carpeted floor. If you put it in hardwoods the blocks would slip around. As a mom I really appreciate that you can stack it on top of one another to put away.