Mario 1 on NES, baby! Came home from my last day of kindergarten and got it as an early birthday present. Used to play Mario 1 and 3 as a wee one late into the night with my mother. Then I got Mario 2 as a little gift from Santa's elves about a week before Christmas when I was 7. It didn't work, so I freaked out and screamed "Santa isn't reeeeaaaaal!!!" And my mom said, "You're right? Santa isn't real! I buy all your christmas presents, and I bought that one from my student!" I cried. End of childhood. And, once I got the game working, it was terrible (because it was Mario 2).