Current game count (not counting the older platforms, or where we have dupes of the same game):
12 3DS games
84 DS games
5 PS3 games
54 PSP games
44 Wii games
37 X360 games
236 total
And... in case anyone wants to see the full list:
3DS
Asphalt 3D
Bust-a-Move Universe
Dead or Alive Dimensions
Green Lantern: Rise of the Manhunters
LEGO Pirates of the Caribbean
Rayman 3D
Steel Diver
Super Monkey Ball 3D
Super Street Fighter IV 3D
Tom Clancy's Ghost Recon Shadow Wars
Tom Clancy's Splinter Cell 3D
Transformers: Dark of the Moon
DS
Ace Attorney Investigations: Miles Edgeworth
Advance Wars: Days of Ruin
Animal Crossing: Wild World
Arkanoid DS
Atari Greatest Hits: Volume 2
Big Brain Academy
Bionicle Heroes
Blood Stone 007
Brain Age
Bust-a-Move DS
Call of Duty: Black Ops
Call of Duty: Modern Warfare Mobilized
Cartoon Network Racing
Castlevania: Dawn of Sorrow
Castlevania: Order of Ecclesia
Clubhouse Games
CrossworDS
DK Jungle Climber
Dragon Quest Monsters: Joker
Elite Beat Agents
Etrian Odyssey II
Final Fantasy III
Flash Focus: Vision Training in Minutes a Day
Geometry Wars: Galaxies
Ghost Trick
Golden Sun
Harvest Moon DS
Henry Hatsworth and the Puzzling Adventure
Honeycomb Beat
Infinite Space
Ivy the Kiwi
Konami Arcade Classics
Legend of Zelda: Phantom Hourglass
Legend of Zelda: Spirit Tracks
Lost in Blue 2
Lunar Knights
Mario & Luigi: Bowser's Inside Story
Mario & Luigi: Partners in Time
Mario Kart
Mechanic Master
Metal Slug 7
Metroid Prime Hunters: First Hunt
Metroid Prime Pinball
My Japanese Coach
My Spanish Coach
MySims Sky Heroes
Mystery P.I.: Portrait of a Thief
N+
Nanostray
Nanostray 2
Neves
New Super Mario Bros.
Nine Hours, Nine Persons, Nine Doors
Nintendogs: Chihuahua & Friends
Nintendogs: Lab & Friends
Overlord Minions
Personal Trainer: Cooking
Phoenix Wright: Ace Attorney
Picross
Puzzler World
Quest Trio
Quick Spot
Retro Game Challenge
SNK vs. Capcom Card Fighters
Sonic Colors
Sonic Rush
Space Invaders Extreme
Spider-Man: Battle for New York
Super Princess Peach
Taiko No Tatsujin DS
Taiko No Tatsujin DS 2
Tetris DS
Time Ace
Time Hollow
Tony Hawk's American Sk8land
Trace Memory
Unsolved Crimes
Wario: Master of Disguise
Winning Eleven: Pro Evolution Soccer 2007
WireWay
Xiaolin Showdown
Yoshi's Island DS
Zendoku
Zoo Keeper
PS3
God of War Collection
Infamous 2
LittleBigPlanet
Uncharted 2: Among Thieves
Uncharted: Drakes Fortune
PSP
Ace Combat: Joint Assault
Alien Syndrome
Army of Two: The 40th Day
Atari Classics Evolved
Ben 10: Alien Force
Buzz! Master Quiz
Castlevania: The Dracula X Chronicles
Crazy Taxi: Fare Wars
Dante's Inferno
Daxter
Dead Head Fred
Fat Princess: Fistful of Cake
Final Fantasy IV
Final Fantasy Tactics: The War of the Lions
Gitaroo Man Lives
God of War: Chains of Olympus
God of War: Ghost of Sparta
Gods Eater Burst
Grand Theft Auto: Chinatown Wars
Hot Shots Golf: Open Tee
Hot Shots Golf: Open Tee 2
Hot Shots Tennis: Get a Grip
Jak and Daxter: The Lost Frontier
Jeanne D'Arc
Killzone: Liberation
Kingdom Hearts: Birth by Sleep
LEGO Batman
LEGO Harry Potter: Years 1-4
LittleBigPlanet
LocoRoco 2
Lumines II
Lunar: Silver Star Harmony
Marvel Ultimate Alliance 2
Metal Gear Solid Peace Walker
MLB 08: The Show
MLB 11: The show
ModNation Racers
N+
Phantasy Star Portable
Phantasy Star Portable 2
PixelJunk Monsters: Deluxe
Puzzle Quest: Challenge of the Warlords
Ratchet & Clank: Size Matters
Scrabble
Secret Agent Clank
Sid Meier's Pirates!
Snoopy Vs The Red Baron
Star Wars Battlefront: Renegade Squadron
Tactics Ogre: Let Us Stick Together
The 3rd Birthday
The Simpsons
Tron Evolution
Valkyria Chronicles II
Virtua Tennis 3
Wii
Amazing Race
Boom Blox Bash Party
Castle of Shikigami III
Conduit
Crash of the Titans
Data East Arcade Classics
Dead Space Extraction
Deadly Creatures
Fishing Master
Ghost Squad
House of the Dead 2 & 3 Return
House of the Dead: Overkill
Link's Crossbow Training
Luxor
Mario Party 8
Metal Slug Anthology
MLB Power Pros
Monopoly Streets
Muramasa: The Demon Blade
My Word Coach
MySims
Nancy Drew: The White Wolf of Icicle Creek
New Carnival Games
New Super Mario Bros.
Nickelodeon Fit
Okami
Pinball Hall of Fame: The Williams Collection
Resident Evil 4
Samba De Amigo
Sega Bass Fishing
Sin & Punishment: Star Successor
Skate It
Sonic and the Secret Rings
Super Mario Galaxy
Super Mario Galaxy 2
Super Monkey Ball: Banana Blitz
Tetris Party Deluxe
Top Shot Arcade
Virtua Tennix 2009
We Ski
Wii Fit
Wii Play
Wii Sports
Zack & Wiki: The Quest for Barbaros Treasure
Xbox 360
Aliens vs Predator
Borderlands: Game of the Year Edition
Castlevania: Lords of Shadows
Catherine
Dance Dance Revolution
Darkness
Deus Ex: Human Revolutions
Dreamcast Collection
Duke Nukem Forever
Fable III
Fallout New Vegas
Fight Night: Round 4
Final Fantasy XIII
Halo 3
Halo: Reach
Hasbro Family Game Night 3
Homefront
L.A. Noire
Mafia II
Major League Baseball 2K11
Mass Effect
Mass Effect 2
Mirror's Edge
Mortal Kombat
Pinball Hall of Fame: The Williams Collection
Project Gotham Racing 4
Raiden Fighter Aces
Red Dead Redemption
Red Dead Redemption: Undead Nightmare
Resonance of Fate
Scene It? Box Office Smash
Skate
Table Tennis
Top Spin 4
Trivial Pursuit
Viking: Battle for Asgard
Viva Pinata