Playstation 1...me and my family have always shared games but me and my sister play them the most now.
As for the first game system that was all my own a Nintindo DS lite.
NES! So many great memories on that system. I'll never forget the first time I got to the final boss in Kirby and I left the game on so I could show my dad and let him do the fight. We apparently had an Atari before that, but the first console we had that /I/ played was NES.
Sega Genesis.
When I was little, we'd have family game nights and we'd play hours of mostly Sonic. We had a few other games, but that's where I draw a blank. I think we had a Mickey Mouse something. I need to find it.
My first console was the Nintendo Entertainment System, aka NES, with classics like Super Mario Bros. and The Legend of Zelda.
Ah, those were the days. *nostalgic*