My compiled list of all new non-sequel, non-remake, non-licensed games with a Metacritic score of at least 75. It's not perfect and I may have missed some or added too many. There are exceptions. I included Orange Box for Portal and I included Strong Bad and Penny Arcade even though they have previous "franchises", but I removed all movie and, therefore, Lego games. I'd say there's still plenty of original titles being produced.
Xbox 360:
BioShock
Orange Box, The (Portal)
Gears of War
Braid
Rock Band
Mass Effect
GRID
Geometry Wars: Retro Evolved
skate
Dead Rising
F.E.A.R.
Viva Pinata
N+
DiRT: Colin McRae Off-Road
Crackdown
Darkness, The
Condemned: Criminal Origins
Assassin's Creed
Saints Row
Rockstar Games presents Table Tennis
Poker Smash
Cloning Clyde
Bully: Scholarship Edition
Kameo: Elements of Power
BIGS, The
Lost Planet: Extreme Condition
Eternal Sonata
Prey
Assault Heroes
Blue Dragon
Roogoo
Lost Odyssey
Astropop
Switchball
Every Extend Extra Extreme
Eets: Chowdown
Wik: The Fable of Souls
Lumines Live!
Zuma Deluxe
Outpost Kaloki X
Mutant Storm Empire
Heavy Weapon: Atomic Tank
Penny Arcade Adventures Epsiode One: On the Rain-Slick Precipice of Darkness
Club, The
Undertow
Overlord
Worms
RoboBlitz
Frontlines: Fuel of War
Exit
Gun
Wii:
Zack & Wiki: Quest for Barbaros' Treasure
Boom Blox
No More Heroes
Bully: Scholarship Edition
Strong Bad's Cool Game for Attractive People Episode 1: Homestar Ruiner
BlastWorks: Build, Trade, Destroy
Rock Band
LostWinds
Wii Fit
Toki Tori
Mario Strikers Charged
Gyrostarr
Mercury Meltdown Revolution
Rayman Raving Rabbids
Wii Sports
Order Up!
Elebits
PS3:
Rock Band
Orange Box, The (Portal)
Uncharted: Drake's Fortune
GRID
Resistance: Fall of Man
Super Stardust HD
skate
Warhawk
PixelJunk Monsters
Everyday Shooter
DiRT: Colin McRae Off-Road
MotorStorm
Echochrome
Assassin's Creed
Darkness, The
Heavenly Sword
BIGS, The
Calling All Cars!
Folklore
Edit: Scratched out a couple. Viva Pinata is based off a franchise... bah, I don't know if that should count :P.
