Uncharted 1,2,3
LittleBigPlanet 1&2

So hard to decide where to cut it off so;

Fallout 3
Mass Effect
ESV: Skyrim
Dragon Age: Origins
ESIV: Oblivion
Red Dead Redemption
Halo 3
Mass Effect 3
Gears of War 3
Darksiders
Assassin's Creed 2
Mass Effect 2
Gears of War
Halo: Reach
Dead Space
Deus Ex: HR
Alan Wake
Fallout: New Vegas
Lost Odyssey
L.A.:Noire
Fable 3
Bioshock
Divinity 2
Dead Space 2
CoD: 2
LOTR: War in the North
Resident Evil 4
Kingdom of Amalur: Reckoning
Dark Souls
Rage
Two Worlds 2
Fable 2
Ninja Gaiden 2
Tomb Raider: Legend
Witcher 2
Gears of War 2
Halo CE: Anniversary
Vanquish
Cndemned:CE
Gothic 4
Star Wars: TFU
Dragon Age 2
The Orange Box
CoD:WaW
Alpha Protocol
Venetica
Enslaved:OttW
Ninja Blade
CoD 3
Resident Evil 5
Prince of Persia 2005
Batman: AA
Crysis 2
AC: Brotherhood
GTA:IV
Prey
Nier
Bioshock 2
TR: Underworld
PoP: Forgotten Sands
007: Blood Stone
The Darkness
Risen
Dead Rising
I Am Alive
Splinter Cell: Conviction
Deadly Premonition
Viking: BfA
TR: Anniversary
Red Faction:Guerilla
Too Human
LOTR: Conquest
Lost Planet: EC
Dark Void
Two Worlds
Sacred 2
Alan Wake: American Nightmare.
The Last Remnant
Conan
FEAR:1
John Woo's: Stranglehold
DMMM: Elements
SW:TFU2
Rainbow Six: Vegas
Ghost Recon: Advanced Warfighter
Pirates of the Carribbean: At Worlds End.
Fable: Pub Games

I was bored. Placements are according to how much I enjoyed each game. Enjoyment is affected by gameplay, voicework, sound especially music, story, character development and likability which tends to favour some sequels, freedom of movement and controls, quality of immersion, value in $/hr. etc. and by hype and the high expectations and subsequent letdowns it creates. This is in no way an indicator of what your experience would be or of production values or objective quality. I know my list isn't exceptional but together they represent an outstanding experience. Thanks for reading.

How can you afford all of that?!?!?  O_O'

Fallout 3
Call of Duty 4
Rainbow Six Vegas
Resistance Fall of Man
Oblivion
Grand Theft Auto IV
Uncharted/Uncharted 2

Anything related to Nintendos 1rst nd 2nd party games.

Respect and honour:

Red steel 2, Silent hill SM, PES and Arc rise fantasia on Wii.
Dementium, tons of good Jrpgs and Srpgs, GTA CW, Ninja Gaiden and Castelvania games on the DS.

No PS360 games at all............maybe Alan wake and Lost odyssey.

Bioshock 1- 2
Call of Duty 4
Mass Effect 1-2-3
Killzone 2-3
Lost Odyssey
Gears Of War 1-2-3
God of War 3
Demon Souls
Rainbow six Vegas
Dead space

Dragon Age origins

^^ !!!!!!!THE1!!!!!   Sorry!  That was excessive. It's less than 90 games and I only own 35-6.  There are a couple of guys in the GS League who are at 1600.and counting.      

Playstation 3

Resistance Fall of Man

Uncharted Drake's Fortune

Uncharted 2 Among Thieves

Ratchet & Clank Future A Crack in Time

Demon's Souls

Dark Souls

inFamous 2

PSP

Metal Gear Solid Peace Walker

Metal Gear Solid Portable Ops

Resistance Retribution

Wii

Mario Kart

Super Smash Bros Brawl

Donkey Kong Country Returns

Super Mario Galaxy

DS

Pokemon Soul Silver

PC

Portal 2