NES:
Super Mario Bros.
Super Mario Bros. 3
Tetris
The Legend of Zelda
Mega Man 2
Startropics
Gameboy:
Pokemon Yellow Edition
Turtles: Fall of the Foot Clan
Turtles 2: Back from the Sewers
Pinball: Revenge of the Gator
Super Mario Land
The Legend of Zelda: Link's Awakening
SNES:
Mega Man X
Super Street Fighter 2
Sim City
Secret of Evermore
Illusion of Time
The Legend of Zelda: A Link to the Past
Harvest Moon
Donkey Kong Country 2
Mystic Quest Legend
Super Mario Kart
Super Mario World
Mario Paint
Bubsy
Turtles in Time
WWF Royal Rumble
Virtual Soccer
N64:
Goldeneye
Super Mario 64
Blast Corps
Snowboard Kids
Mario Kart 64
Top Gear Rally
Turok: Dinosaur Hunter
International Superstar Soccer
PSX:
Resident Evil 3
Tony Hawk 1 and 2
Final Fantasy 9
Gamecube:
Doshin the Giant
True Crime: Streets of LA
PS2:
Grand Theft Auto III
Vice City
San Andreas
Singstar
Xbox:
Morrowind
GBA:
Castlevania: Circle of the Moon
Tony Hawk (forgot which one)
N-Gage:
Pathway to Glory
Xbox 360:
Gears of War 2
Battlefield: Bad Company 2
Saint's Row
PS3:
Skate 2
Final Fantasy 13
Battlefield 3
GTA 4
Ridge Racer 7
Wipeout HD
Street Fighter 4
Fallout 3
Skyrim
PSP:
Pursuit Force
Mega Man: Maverick Hunter X
Metal Gear Acid
PC:
Hollywood Pictures
Dime City
Broken Sword
Broken Sword 2
Transport Tycoon
Capitalism
Sim City 4
Half-Life
Counter-Strike
Unreal
Need for Speed 4
Oblivion
Rollercoaster Tyoon Demo (yes, really)
Tomb Raider
Fußball Manager 2011
Kicker Fußball Manager
Age of Empires 2
Command and Conquer: Red Alert
GTA 2
Final Fantasy 7
Final Fantasy 8
Soldier of Fortune
The Sims
The Sims 2
The Sims 3
Quake 3 Arena
Pirates of the Burning Sea
Frozen Bubble
Resident Evil
Call of Duty
I'm sure I forgot some games, but whatever. On most games I got to 100+ hours because I played them for many years, some of them until this very day. Just finishes Pursuit Force again the other day.
Official member of VGC's Nintendo family, approved by the one and only RolStoppable. I feel honored.