Tony Hawks Pro Skater (the first one) on the PS1.
Without a full explanation it sounds silly, but that game changed my life.
Super Mario Brothers.
I remember thinking how amazing it was to actually be able to make the character move and jump on the screen. It was like playing with an action figure, only I wasn't pretending the figure is moving or jumping, it actually was moving.
I don't know who's house I was at, it someone my parents were visiting, who's kid had a nintendo. i was like 6 years old, and there were a group of other kids around the same age or a little older, all sitting on the floor, looking up at the TV. We all took turns, playing after someone died. I remember I kept dying at the first jump, while everyone could make it with ease. No matter how hard I tried, I always failed, and just could never made it.
The problem? No one told me that holding down the B button would make Mario run faster. The kids just kept letting me die, then taking the controler. Little punks.
But still, I thought Mario was the greatest thing I had ever seen.
Asteroids (Atari 2600) I remember playing with my best friend one day until we had flipped the scoreboard 9 times and had max lives. We finally just got tired of playing and quit.
Pong.
Haunting Starring Polterguy (Megadrive)
Missle Command probably, on Atari. My Dad loved that game. Can't believe he sold our old system+games for $5 at a garage sale.
We had Intellivision. Not sure which games we had for it though.
Paperboy!
Wolfenstein 3D. My uncle was playing it when I was very young and he let me play it too. Problem was, I was so young so all I did was hold the controller. I didnt even know what a videogame was.
Pong was mine, but I loved my Intellivision in the early 80's. Amazing how far things have come, BFBC2 is my game now, what a difference.
Mine was either Tom and Jerry on the gameboy color, or Star Wars: Dark Forces II for the 95/98 PC. I can't recall which was first, but I love both dearly. Great times.