First game you played on each system
 

Saw a similar thread at GAF and figured I'd start one up here.
Here we go

Atari: Pitfall
Mac: Dark Castle
PC: Yukon Trail or California Games

NES: Super Mario Brothers/Duck Hunt
Gameboy: Tetris
SNES: Street Fighter II
Sega Genesis: Altered Beasts
GameGear: NBA Jam
Sega CD: Mortal Kombat
Sega Saturn: Daytona USA
Sega Dreamcast: Shenmue
N64: Mario 64
Playstation: Twisted Metal
Xbox: Halo or NFL Fever 2001
360: Oblivion
PS2: Dark Cloud
Wii: Wii Sports
PS3: MGS4

The hell if I can remember. The only one I know for certain was NES - Super Mario Brother/Duck Hunt.

Motorstorm might have been my first on the PS3

Nes was super mario
snes maybe super mario or donkey kong
sega genesis was the lion king game
sega saturn was this arcade cop game
ps1 was a racing game gran turismo ?????
n64 was either super mario or bajo kazooie
ps2 don't really remeber
xbox an early racing game, halo, or this game with some green dude
xbox 360 was either halo 2 or COD
ps3 was resistance

edit: dreamcast was power stone
psp was gta
I think mac II counts which was probably Oregon Trail

I loved the lion king on sega.

Was the Saturn game Virtual Cop?

The lion king game came with my sega. I beat maybe 3 levels before I quit. Crap was hard, especially the giraffe tossing simba on the hippo.

Yes, virtua cop was the game. It was fun

NES - Mario 3
Genesis - Altered Beast
SNES - Super Mario World
Gameboy - Bonk
Turbografx - Splatterhouse
Sega CD - Sewer Shark
Saturn : Daytona
Playstation: Toshinden
Dreamcast - Sonic Adventure
GBA - Tactics Ogre KOL
N64 - Mario 64
Xbox: Halo
PS2: Dark Cloud
Gamecube : Mario Sunshine
PSP : FFT WOTL
360 : PDZ
PS3: Resistance
Wii: Wii Sports

GAmeboy for me was the game with Samus. Can't recall the name.

Nintendo: Duckhunt (my mom has a picture of me playing this when I was almost 2.)
IBM (pre-windows): Quest for Glory or Hero Quest
Gameboy: Tetris
Sega Master System: Shinobi
Super Nintendo: Super Mario World
Genesis: Sonic and Tails or Sonic 2
SegaCD: Sonic CD
PlayStation: Battle Arena Toshinden
PC (windows): Diablo (I remember begging my mom for a computer for school-work, when really, I just wanted to play Diablo)
Nintendo 64: Super Mario 64
Dreamcast: Shenmue
GBA: Fire Pro Wrestling
Playstation 2: The Bouncer
GameCube: REmake
Xbox: Halo
Nintendo DS: Mario Kart DS
Wii: Bowling
Xbox 360: Gears of War

Shinobi was THE SHIT !!!

Atari - No idea
NES - Super Mario Bros
Gameboy - Tetris
Sega Master - Shinobi
Genesis - Altered Beast
SNes - Super Mario World / UN Squadron
Gamegear - Sonic
N64 - Goldeneye
PS1 - Gran Turismo
Dreamcast - whatever the 2k NFL game was called
PS2 -Final Fantasy X
Xbox - Knights of the Old Republic
PSP - Twisted Metal
Xbox 360 - Halo 3
PS3 - Resistance

Dang, I don't think I can remember a single one.

NES: Mario/Duckhunt
SNES: F-Zero
Sega Genesis: Sonic the Hedgehog
N64: Mario 64
Dreamcast: NFL 2k
PS1: Tekken
PS2: GTA III
XBox: Halo
XBox 360: Oblivion
PS3: Resistance

Atari: war
Mac: none
PC: civil war

NES:smb/dh
Gameboy: Tetris
SNES: tecmo bowl 2
Sega Genesis: Sonic the hedgehog
GameGear: none
Sega CD: none
Sega Saturn: none
Sega Dreamcast: madden
N64: Mario 64
Playstation: madden
Xbox: Halo
PS2: madden
PS3: none
xbox 360: oblivion

No Odyssey2 owners huh?

I just copied his list but I'd also have to add a comodore 64 game.