The first game you ever purchased; likely the first major purchase of your childhood. The game that, now, looking back, is probably a janky, clunky mess, but still holds a special place in your heart.
My first game purchase was Infected, for the PSP 1000 which I purchased the same day.
I saw the cover and was sold. A zombie game rated M? Hell yeah! (Heck yeah, because I was with my Father and such language from a child would have been met with some sort of discipline).
So what was the first game you purchased with your own money?
I bought Q-bert when I was around eight. My grandma didn't want me to spend the money, I think it was around $30. She only relented when I promised to open a savings account with an equal amount of money. I couldn't figure out how to play the game when I got it home so I took it back and got Pac-Man.