Not the first game you played, or owned, or your first favorite...
But what's the first game that you utterly mastered to the point where your friends would refuse to play it with you?
The first single player game I mastered was Super Mario Bros. My friends wouldn't want to play that game with me because my turn would last "the whole game long." I'd say "come on, I'll let you be player 1!" but they still wouldn't, because they knew that as soon as they died once they'd have to watch me pass the whole game again.
The first competitive game I completely dominated was Mortal Kombat II. My friends always gave me competition in Street Fighter and other fighters, but MKII was mine. I picked it up the day it came out at Toys R Us, and got a strategy guide, and quickly memorized every move, every fatality, and all of Shang Tsung's morphs. I was the jerkface always playing as Shang Tsung and morphing into every single character. Then nobody wanted to play it with me anymore.
