I can't quite remember what I played FIRST. Though one of my oldest gaming memories, which has a chance at being my first and also one of the games inflated the most, is UT99. Loved me some BT, MH, and sniper TDM. Low grav insta gib in UT04, and Invasion. But 99 wins in time spent playing, easy.
Mario Game Gallery is the first game I ever "beat", but I recall my brother not letting me play A Link to the Past, very faintly. (I was only able to play games at school due to being a young child who had to wait until big brother got off the console, which was never. I had to buy his 64 from him before I could really play games to my heart's content.)
[–] HortManDeux ago
My earliest gaming memory is playing Asteroids in a small regional airport lobby sometime in early 1980.
[–] SlayerOfShoes ago
This is gonna date the fuck out of me, but Adventure on the 2600. The dragons still look like ducks.
[–] Cynical_Crusader ago
For me it was probably playing Halo in 2001 on a relatives Xbox.