As a child of the 70s I remember getting Combat on Atari 2600. Damn that was a good xmas. I was also blow away with NES super mario brothers. I was amazed how you weren't confined to the edge of the screen. lol moving on from there. Star Fox being one of the first polygon games. Meridian 59 for first online graphical MMO (well it wasn't massive but 150 people on a server using dial-up was damn impressive for 1996)