I wish I had the time and money to spend on a lot of gaming. My newest console is an old school PSX from 1998 and my newest game is Final Fantasy 9. For the whole list as far as I remember..
Atari 2600 - games sold or lost, now only Defender remains
Defender
Combat
Asteroids
Warlords
Circus something..
Pole Position
NES - some of these are MIA (either destroyed or in some nephew's toybox) and my brother took all the rest back to Japan with him
Blades of Steel
Double Dribble
Contra
Metroid
Super C
Battletoads
SMB/Duck Hunt
Renegade
Excitebike
TMNT 1,2
SMB 3
Zelda 1
Track and Field II
Gremlins 2
Chip N Dale
Ducktales
Castlevania 1, 3
Dragon Warrior
Tetris
Dr. Mario
Fester's Quest
Kirby's Adventure
Mega Man 3
Mike Tyson's Punch-Out
Yoshi
Pro Wrestling
R.C. Pro Am
SNES - still got these
Super Mario World
Super Mario All-Stars
Yoshi's Island
Earthbound
Secret of Mana
Secret of Evermore
Chrono Trigger
Final Fantasy III
Donkey Kong Country 1,2,3
Illusion of Gaia
Street Fighter 2 Turbo
Mortal Kombat 1, 2, 3, Ultimate
Uniracers
Killer Instinct
Zelda: LttP
NBA Jam
Super Mario RPG
Super Metroid
Playstation
Kartia: The Word of Fate
Final Fantasy 7, 8, 9
Chrono Cross
Wild ARMs
MediEvil
Nightmare Creatures
Tekken 3 (stolen from me though)
Parasite Eve
Frogger
King's Field 2 (suck)
Castlevania: Symphony of the Night (original, not GH)
Brave Fencer Musashi
Xenogears
Armored Core
Tomb Raider II
Diablo
Bushido Blade
Mega Man X5
G-Police
Jet Moto 2
Tenchu
Final Fantasy Tactics
Einhander
PC
Dungeon Keeper
Diablo
Diablo II + expansion
Starcraft
Warcraft III
Baldur's Gate
Icewind Dale
Total Annihilation + expansion
AquaNox
Sacrifice
Worms Armageddon
Unreal Tournament
No One Lives Forever
Duke Nukem 3D
Civilization 2, 3, Call to Power
Age of Empires 2 + expansion
Command and Conquer: Red Alert
Caesar 2