I lost a game to a 7 year old tonight, and it was fantastic. Specifically it was my 7 year old daughter. I saw the exact moment she realized her win condition that would take 2 turns, stare at the cards in her hand some more, and then smile. Watching her carefully play cards from her hand over the new few minutes was awesome. There are few things more gratifying that watching your kids grow up before you and be able to hold their own against an adult.