Wii:Super Mario Galaxy, Super Smash Bros. Brawl, Dragon Ball Z: BT3, Zack and Wiki, Mario Kart Wii, No More Heroes, Blast Works and Battalion Wars 2.
WiiWare:Toki Tori, Mega Man 9, World of Goo, I also got Lost Winds as a gift.
VC:Mega Man 2, and I received 5 gifts.

PS2:Shadow of the Colussus.
PS3:GTA4, MGS4,Burnout Paradise.
And I can't remember all the Xbox360 and XBLA games.

Hmmmm
DS: Chrono Trigger, FF tactics 2, Professor Layton, Phoenix Wright Justice for All
Online Content: Super Mario Bros, Cloning Clyde
Wii: Boom Blox, De Blob, No More Heros, Okami, Brawl, Wii Fit
360: Eternal Sonata, Fable 2, Lost Odyssey, GTA4, Naruto: Rise of a ninja, Tales of Vesperia

Wii:
- Wii Fit
- Brawl
- No more Heroes
- (Waiting for mario kart to arrive)

Wii ware:
- Lost Winds


PS3:
- PES 2009
- Fallout 3
- GTA4
- Prince of Persia
- Midnight Club

I would've gotten other games on the wii, but unfortunately i have to get ask my cousin in England to get me them, and it takes a while. PS3 i have no problems though!

5 PS3 bluray titles (VC, LBP, SC IV, Uncharted, NGS),
3 psn titles, around 15 ps2 games , 3 ps1 titles (FF VII, VIII, IX :) )
and too many to count pc games (including ME, Fallout 3, DMC 4)

PS3 :

BioShock
Civilization : Revolution
Dead Space
Devil May Cry 4
Fallout 3
Far Cry 2
Genji : Days Of The Blade
Grand Theft Auto 4
Lego Indiana Jones
LittleBigPlanet
Lost Planet : Extreme Condition
Mercenaries 2
Metal Gear Solid 4 : Guns of the Patriots
Overlord : Raising Hell
Prince Of Persia
Resistance 2
Saints Row 2
Sonic The Hedgehog
Star Wars : Force Unleashed
Tomb Raider Underworld
Unreal Tournament 3
Viking : Battle For Asgard

PSN :

1942: Joint Strike
Bionic Commando Rearmed
Crash Commando
Elefunk
Linger In Shadows
NovaStrike
PixelJunk Eden
PixelJunk Monsters
Ratchet & Clank Future: Quest for Booty
Savage Moon
Siren: Blood Curse
Supersonic Acrobatic Rocket-Powered Battle-Cars
WipEout HD
Wolf Of The Battlefield : Commando 3

PS3: 8
PS2: 5
PSN: 7
DS: 2

PS2 games were all bought for $10, 3 from ebgames, 2 from blockbuster. 5 PS3 games were bought for $20, 2 were from a rental store, the rest brand new.

ps3 : mgs4 , uncharted:drakes fortune,oblivion,fallout 3,disgaea 3,valkyria chronicles,soulcalibur 4,bioshock,dead space,tomb raider:underworld,assassins creed,splinter cell:double agent, resistance:fall of man,resistance 2,unreal tournament 3,enemy territory:quake wars,fear,lbp,dragon ball z:burst limit,rainbow 6:vegas,untold legends:dark kingdom,call of duty 3,turok,enchanted arms,eternal sonata.
360 : lost odyssey,blue dragon,tales of vesperia,last renmant,final fantasy 11 online,fable 2.
wii : legend of zelda:twilight princess,tales of symphonia:dawn of the new world,baroque
psp : brave story:new traveler,ff7:crisis core,tales of the world:radiant mythology,y's:ark of naphism
ds : final fantasy 3,final fantasy 4,dragon quest 4,chrono trigger,twewy
ps2 : final fantasy 10,final fantasy 10-2,xenosaga 1-2-3,dark cloud2

PS3:
Devil May Cry 4
Grand Theft Auto 4
Metal Gear Solid 4
Soul Calibur 4
Silent Hill: Homecoming
LittleBigPlanet
Mirror's Edge
Resistance 2
Prince of Persia
Motorstorm: Pacific Rift
Dead Space

Xbox360:
Condemned 2: Bloodshot
Ninja Gaiden 2
Fable 2
Fallout 3
Gears of War 2
Call of Duty: World at War
Banjo-Kazooie: Nuts & Bolts
Tomb Raider: Underworld

Wii:
No More Heroes
Super Smash Brothers: Brawl
Mario Kart Wii
NiGHTS: Journey of Dreams
de Blob

PSN:
PixelJunk: Eden
PixelJunk: Monsters
Echochrome
Linger in Shadows

XBLA:
Omega Five
Penny Arcade Adventures: Episode 1
Geometry Wars: Retro Evolved 2
Bionic Commando Rearmed
Fable 2 Pub Games
Banjo Kazooie

WiiWare:
Lostwinds
Mega Man 9

PSP:
God of War:Chains of Olympus
Crisis Core: Final Fantasy VII
Killzone: Liberation

DS:
Professor Layton and the Curious Village
Ninja Gaiden: Dragon Sword
Final Fantasy IV
The World Ends With You
Dragon Quest IV
Castlevania: Order of Ecclesia

Grand total: 45

I'm sure i'll forget some here:

Wii Retail: No More Heroes, Brawl, MarioKart Wii, Wii Fit, Boomblox, Guitar Hero: World Tour

DLC: Lost Winds, Orbient, World of Goo, Super Dodge Ball

360 Retail: GTAIV, Soul Calibur IV, GoW2

DLC: Bionic Commando, Portal: Still Alive, Castle Crashers, Soul Calibur, N+.

9 Retail games, 9 downloaded. 18 total.

Oh crap... I lost count.... or track.

No More Heroes (Wii)
Sonic Unleashed(Wii)
Call of Duty 4 (PS3)
Saints Row (PS3)
Tomb Raider Underworld (Wii)
Tales of Symphonia (Wii)
Castlevania Judgement (Wii)
Super Smash Bros Brawl (Wii)
Mario Kart Wii (Wii)
Socom bundled head set (PS3)
Valkyria Chronicles (PS3)
Metal Gear Solid 4 (PS3)
Boom Blox (Wii)
Zack n' Wiki (Wii)
Dragon Quest Swords (Wii)
Chocobo Dungeon (Wii)
Mario and Sonic at the Olympics (Wii)
.... Theres more.. I just can't remember them all.

I'm not even going to try to count my DS line up... I actually just bought my third DS today, I liked the poke'mon' case =P Which reminds me about opening it.