What it says on the title. What was the first video game you ever played? How did you branch off from there? How old were you when you broke into gaming?
The first game I ever played was Super Mario Bros. for the Nintendo Entertainment System. It was the 1988 double cartridge that came with Duck Hunt, so that was my second game. I had a lot of fun with both, but I don't remember getting very far on either my first playthrough. I think I was about 3 or 4 at the time. From there I played other games in my brother's library: Karate Champ, JAWS, Nightmare on Elm Street, The Uncanny X-Men, Teenage Mutant Ninja Turtles 2. Nintendo was a pretty big part of my childhood followed up by Sega and PlayStation.
I need to review more Nintendo stuff.