The Sims Medieval - Epic Trailer

Game - The Sims Medieval
Publisher - EA Play
Developer - The Sims Studio
Platform - PC, Mac
Release Date - 22 March 2011

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

Heavy Rain - The Making Of Heavy Rain

Game - Heavy Rain
Publisher - Sony Computer Entertainment
Developer - Quantic Dream
Platform - PS3
Released Date - 23 February 2010

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

Dead Space 2 - Screens

Game - Dead Space 2
Publisher - Electronic Arts
Developer - Visceral Games
Platform - PC, 360, PS3
Release Date - 25 January 2011

Source
http://asia.gamespot.com/

Beyond Good And Evil HD - Teaser Trailer

Game - Beyond Good And Evil HD
Publisher - Ubisoft
Developer - Ubisoft Montpellier
Platform - 360, PS3
Release Date - TBA 2011

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

Catherine - Gameplay Trailer

Game - Catherine
Publisher - Atlus
Developer - Atlus
Platform - 360, PS3
Release Date - TBA

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