This has been one of my son's favorite sites since he was three. Although he started using it at three, it took him a while to figure out how to use the games, and I was explaining and demonstrating a lot to him to compensate. I think it's more age appropriate for 5+. With that aside, I love the creativity it brings out, as members get to draw their own pets, pet food, cars (to play games in), and even the background for the world their pets live in. Once drawn, the pets become animated (okay, they really just wiggle around, but it's cool), and are fun to interact with. You can also create multiple worlds, or unlock new drawing colors/patterns/brushes by playing the games and winning. Negatives are that some of the best features can only be unlocked with a paid membership, so if you don't feel like paying $5.95/month, then you won't have all the features.