for sega genesis:
Revenge of Shinobi
Golden Axe
Gaiares (even though I never made it past level 2)
Sonic and Tails
Streets of Rage
Street Fighter II
Echo the Dolphin
Columns
Mortal Combat
Sega Bass Fishing
Nintendo 64:
Mario Parties 1-4 I think were on this system (me and my cousins would stay up all night until 7AM playing this game when we were kids same for Mario Cart *sigh* good times T_T)
Mario Cart
Super Smash Brothers
Pokemon Snap
Yoshi's World (I think thats the title you play as Yoshi and blah blah blah)
PS1:
Parasite Eve
FF Origins
FF IV
FF anthology
FF VIII
FF IX
Chrono Trigger
Digimon World
Digimon card battle (I forgot the actual title lol)
Digimon Rumble Arena
Twisted Metal
Game Boy Color:
Pokemon Yellow, Blue, Red, Silver, Gold, and Crystal
Pokemon card battle
Zelda oracle of seasons and ages
I can't remeber anymore I used to love lol ^_^''