I beat Super Mario Bros. on the NES in the week after Christmas '88 when I first got the system. The first game I remember being really, completely thrilled to beat was Mike Tyson's Punch-Out! two months later because even though my friends got the game before I did, I was the first kid in the neighborhood to beat Tyson. Everyone else thought it was impossible, but I was beating him an amazing 15% of the time! One in seven, that was "l33t" in 1989.