In order of obtaining the system..
PC: I can't even say, so may games on the PC. I'll go with Guild Wars
Gameboy - Pokemon Red
Nintendo 64 - Super Mario 64 - Very hard to decide
NES - Super Mario Bros. 3 - Hands down
Gameboy Colour - Warrio Land 3
SNES - Super Mario World
Gameboy Advance - The Legacy of Goku 1
Sega Genesis - Mortal Kombat 2
Playstation - Final Fantasy VII - easy
Playstation 2 - Metal Gear Solid 3: Snake Eater - almost impossible to choose
PSP - Crisis Core: Final Fantasy VII - Very tough to choose
Wii - Legend of Zelda: Twilight Princess - Haven't played many Wii games yet
Playstation 3 - Metal Gear Solid 4: Guns of the Patriots - almost impossible to choose
Nintendo Gamecube - Super Mario Sunshine
Sega Saturn - Virtua Fighter 2 - one of my few games
Nintendo DS - New Super Mario Bros.
Nintendo 3DS - Legend of Zelda: Ocarina of Time 3D
PS Vita - Persona 4: Golden
Playstation 4 - Only have CoD: Ghosts
I still own most of these consoles.
