This was a gift for my almost 3 year old daughter. She LOVED it, and spent at least an hour building before allowing her 6 year old brother to join in. He also loved building things and taking them apart. They built an entire city together with little fighting. My husband even joined in a little later, and commented on how cool these tiles are. I love toys that allow for creativity, and my kids have both built several different things (cars, rockets, robots, houses, towers, etc.) in the few days that we've had these. There is a good variety of shapes, so it allows for making many different things.