well i looked, and such a broad topic was never created...so out of bordom, list games that you have.
i'm leaving out sega saturn, because i don't care about it.


N64

Starfox 64
Perfect Dark
Conkers bad Furday
Super Mario 64

Playstation

Final Fantasy 7
Final Fantasy 8
Fear Effect
Megaman X 4
Legend of Dragoon
Metal Gear Solid
Ghost in the Shell

Playsation 2

Resident Evil Code Veronica X
Xenosaga
Radiata Stories
Star Ocean: Till the End of Time
X-Men Legends
Suikoden 3
Grand Theft Auto: San Andreas
Ghost in the Shell: Stand Alone Complex
Metal Gear Solid 3-Snake Eater
Front Mission 4
Dragon Ball Z: Budokai Tenkaichi
Atelier Iris: Eternal Mana
Onimusha 2
Onimusha 3

Gamecube

Super Smash Brothers Melee
Metroid Prime
Resident Evil
Resident Evil 4
Fire Emblem: Path of Radiance

Nintendo DS

Yu-Gi-Oh: Trubadore of Nightmare
Trauma Center: Under the Knife
Pheonix Wright: Ace Attorny

Xbox

Samurai Warriors
The Matrix: Path of Neo
GUN
Halo 2
Fable: The Lost Chapters
Star Wars: Knights of the Old Republic
Star Wars: Knights of the Old Republic 2 the Sith Lords

PC

Star Craft
Star Craft: Brood War
Warcraft 3
The Elder Scrolls 3: Morrowind
The Elder Scrolls 3:Tribunal
Neverwinter Nights
Neverwinter Nights: Shadows of Undertide
Ghost Recon
The Sims
The Sims Livin' Large
The Sims Vacation
The Sims Unleashed
Black and White
Pong
Tribes 2
Star Wars: Galactic Battlegrounds
Star Wars: Galactic Battleground Clone Campagins
Command and Conquer:Tiberian Sun
Duke Nukem: Manhatten Project
Return to Castle Wolfenstien
Star Wars Jedi Knights 3: Jedi Academy
Alien vs Predator
Kiss Pinball (it was a dollar >_>)
Metal Fatigue

My PC games are old...because my computer it self is old.