James Cameron's Avatar : The Game - Multiplayer Trailer

Game - James Cameron's Avatar : The Game
Publisher - Ubisoft

Developer - Ubisoft Montreal

Engine - Dunia
Platform - PC, 360, PS3, Wii, PSP

Release Date - 01 December 2009

Source
http://www.youtube.com/user/ubisoft

Darksiders - Hellbooks Trailer Book 1 : The Horseman's Road

Game - Darksiders
Publisher - THQ
Developer - Vigil Games
Platform - 360, PS3
Release Date - 05 January 2010

Source
http://www.youtube.com/user/DarksidersVideoGame

Bayonetta - The Dark Art Of Destruction Screens

Game - Bayonetta

Publisher - Sega
Developer - Platinum Games / Sega
Platform - 360, PS3
Release Date - 05 January 2010

Dark Void - The Watchers Trailer

Game - Dark Void
Publisher - Capcom
Developer - Airtight Games
Engine - Unreal 3
Platform - PC, 360, PS3
Release Date - 12 January 2010

Source
http://www.youtube.com/user/G4VideogameTrailers

Alan Wake - Gameplay Feature

Game - Alan Wake
Publisher - Microsoft Game Studios
Developer - Remedy Entertainment
Platform - PC, 360
Release Date - Pc - March 2010
360 - May 2010