hmm...
Atari 2600
NES
SNES
N64
PS2
Slim PS2
Cube
Wii
360
NDS
NDSL
Computer (a few, only only one gaming rig)
I've had a few flavors of the Gameboy, starting with the original, but I have absolutely not clue where those are. Also had a Turbo Grax 16. I also have more than one system of many of those listed.
Alot of games for most of them. I'm not going to bother counting. I know over 25 for the Wii and over 50 for the DS, many that I haven't gotten a chance to play yet

the bulky gameboy: 6 games
game boy (no color): 8 games
game boy (color): 8 games
game boy sp: 9 games
ds: 5 games
N64: 6games
super nintendo: 20games
sega gennisis: 5 games
xbox: 23 games
xbox 360: 16 games
ps1: 8 games
ps2: 15 games
Ps3: 3 games (going to be returning it soon)
computer: (nice custom built gaming rig) 12 games
Well thats all I can think of, or at least find in my big footlocker.
i own/used to own
Game Boy Color
Game Boy Advance SP
DS Lite
Genesis
PS1
PS2
Gamecube
Wii
I own:
GBC
GBA
GBA SP
N64
Cube
DS
DS Lite
Wii
All are nintendo systems

my complete list of consoles I've ever owned.
Sega Master System (about 10 game) - (I had 2) Sold both at garage sale. I regret it now >.<
SNES (Regular one - 10 games) - Still have.. only game I play is "linked to the past".. which I now play on my DS...
Gameboy Colour (Purple) about 10 games.
DS (FF3, and M3) - Just got it a few months ago. My most up-to-date system..
And PC.. which is broken beyond repair, so its no longer for gaming. Making new one though.
My parents always said buying game systems was a waste of money :p
well i got a total of 900 games in all and got all systems
I own/have owned:
NES (my bros had it before I was born, anyway.

)
N64
Game Boy
Game Boy Color
Game Boy Advance
Game Boy Advance SP
GameCube
Wii.
Can't remember games.

NES
SNES
N64
PS2
XBOX
XBOX360
Gameboy
gameboy color
gameboy advanced
Nintendo DS
Wii
and im not sure about games
Gamecube
GBA
SP
not sure how many games though
Systems and games:
Game Boy Color-Alteast over 20 games
Game Boy Advance SP-Only like 5-10
Nintendo DS Lite-14-15
Nintendo Gamecube-50+
Nintendo Wii-14-15
PC-10-15 (unless you count those kiddy games...then there's like 100+ XD)
Games that I don't own the system but for some reason own:
PS2-5-10
Xbox-5-10
PSP-3
Mac (Ok, not a console, but it did have some games)-10-20
NES (VC)-3 (I think)
SNES (VC)-2 (Again, not sure)
Sega Genesis (VC)-1
Nintendo 64 (VC)-3
So yeah, I missed out on the NES, SNES, N64, all of those. The Game Boy was really my introduction to gaming, then the Gamecube. After I got them though, I have to say, I LOOOVE Gaming!
Oh and the Xbox, PS2 and PSP games are from a contest I won (IGN's Gamescoop Podcast Trivia). The Mac games are there because I once (When I was very young) had a Mac...I guess that was my introduction to BAD games. d: XD
I Own/Have Owned:
Gameboy Pocket
Nintendo 64
Gameboy Advance
Gameboy Advance SP
Playstation 2
Xbox
Xbox 360
PC
Over time, i've had maybe 50 games, most of which were sold, etc.
Atari
Sega Genesis
NES
SNES
Playstation
N64
Gamecube
Playstation 2
Wii
Gameboy
Gameboy Pocket
Gameboy Color
Gameboy Advance
PSP
DS
those are the systems/handhelds i know we have around the house, but some of them are lost in storage in our basement...we have at least 20 games for each of the older systems, and not so many for the PS2 or Wii yet. i think we only have one or two games for the PSP, the gameboy games all kinda mesh together, and idk where my case is with all my older games.
hey the systems i have are NES, virtual boy, N64, gamecube, wii, gameboy advance, and regular gameboy. the only systems im missing are SNES, gameboy color, and the DS. for all the systems i have though, i have every mario game and i am planning to get every mario game for every system out there. i also want every nintendo system.