Here is a big list of this generations cancelled games from game informer
Sometimes games don't make it to the finish line. Sometimes a game's cancellation is a huge disappointment. Sometimes, we don't even know a game exists until it gets cancelled. Other times a game gets canceled so early in development that we never even hear about it (these obviously won't be included on the list). This is our evolving database of all the known games that have been cancelled for the PlayStation 3 and Xbox 360. Many of the games on this list haven't received official cancellations, but the evidence points to their disappearance. If they suddenly surface we will be more than happy to remove them from this list. If a game is suddenly cancelled, however, you can bet it will show up here.
Click here for more infomation on those games
2 Days to Vegas
The Agency: Covert Ops
Alhambra
AionGuard
Axiom: Overdrive
Bonk: Brink of Extinction
Cipher Complex
Coded Arms Assault
The Dark Knight
Dead or Alive: Code Chronos
Dirty Harry
Elveon
Ender’s Game: Battle Room
Endless Saga MMO
Eyedentify
Faith and .45
Gears of War: Exile
Gotham by Gaslight
Halo: Chronicles
Halo MMO (Titan, Project Titan)
Harker
Heavenly Sword 2
Hei$t
Huxley
Indiana Jones and the Staff of Kings
Killing Day
The Lord of the Rings: The White Council
MechWarrior Online
Mega Man Universe
Metalocalypse: Dethgame
The Office
Pirates of the Caribbean: Armada of the Damned
Rendition: Guantanamo
Bumby Trot 2 (Steambot Chronicles 2)
Scivelation
Severity
ShadowClan
Six Days in Fallujah
Sundown
Survivor
Theseis
This is Vegas
Tiberium
Totems/Urban Race
Ugo Volt
Voodoo Nights
Wardevil
Xbox 360 MMOs: Final Fantasy XIV, Age of Conan, Star Trek Online, APB: All Points Bulletin