There was this guy who turned me onto videogames, right. I used the flimsiest excuses to bike a mile to his house and get beaten up in Street Fighter 2 on the SNES, and gladly. Anyway, long story short, one day I beat him with all eight characters in turn, without fail. That was so cool I almost had to change my pants after.
Since then he hasn't played the game, and I've moved on from just winning to doing some kinda surreal painting with a palette of bruises, or music from the sounds of fierce kicks if you will. . .
Also, if anyone has heard of the giant stone cube avalanche puzzle game Kurushi, I like to play a two-level demo of it where I've developed a two-for-one move definitely not intended by the designers. It's risky and often fails with catastrophic results, but one time I managed a perfect run (only two levels and all) and got an IQ score of like 160. I'm not sure if tricking the test counts as actual intelligence quotient, but I sure felt clever.
Speaking of clever, I once bested a one-time European chess championship silver medalist. Of course he'd beat me about 100 times before that. And it was like 40 years since he was at the top of his game. And it's not a videogame. But still.
Oh, and I mastered the entire school of Learning skills in Eve Online. There should definitely be an award for that.