Hmm. I started playing games when I was 4. We initially had Ice Climber and Popeye, and a year later we also got Super Mario Bros.. I'd like to think that I was good enough to beat games at that age, but I don't think that is very likely. I couldn't have know about any of the warp zones in SMB., and beating every level in Ice Climber, I don't think I've ever beaten it without using stage select. No, it was probably a little while later that I beat my first game. I remember my brother beating Kung Fu, something I also learned to do shortly thereafter, so maybe it was that or possibly Super Mario Bros. I estimate it was at the age of 6 or so.