Valve announced the official launch of Steam Trading, which was in beta a few weeks ago, allowing gamers to exchange in-game items and game gifts.

A war is raging over the planet which has left it in chaos and ruin. A zombie virus has rapidly spread through the human population across the globe, leaving it with one hope — you. Among the few capable of fighting back and surviving the mayhem and destruction, your mission is to take on the zombie masses and come out alive.

Play as Detective John Tanner on a relentless manhunt for crime lord Charles Jericho through the hills of the City by the Bay. With its timeless setting, unique car handling and renewed playability, and over 100 licensed vehicles, Driver San Francisco will revitalize the classic free-roaming, cinematic car chase experience.

Another day, another batch of games shipped to stores. Instead of giving them all their own posts, we grouped them, and so far there are announcements for:

• BloodRayne: Betrayal (PSN)
• Driver San Francisco (Wii/PS3/X360)
• The Penguins of Madagascar: Dr. Blowhole Returns - Again! (NDS/Wii/PS3/X360)
• Resistance 3 (PS3)
• Rise of Nightmares (X360)
• Tiger Woods PGA Tour 12: The Masters (PC)
• Voodoo Chronicles: First Sign (PC)
• Warhammer 40,000: Space Marine (PS3/X360/PC)

We will update this throughout the day when new announcements become available. Read more for details ...

Ace Combat 3D soars to the 3DS platform with an intense 3D experience that delivers supersonic flying, exciting dogfights and high-altitude acrobatics.

Microsoft has revealed what Xbox Live members can expect to see on the Marketplace Sept 6 – Sept 19, such as Crimson Alliance, BloodRayne Betrayal, and Homefront as On Demand title.

Global Ops: Commando Libya is a plot-driven squad-based action game with contemporary reference to the current Libyan conflict. The player is part of a special team that has to stop the threat of an atomic catastrophe by Arab terrorists either in a solo mission or with his AI buddies.

Unity of Command is a turn-based strategy game that combines easy-to-learn gameplay with historically accurate recreations of epic WWII battles of the Stalingrad Campaign.

Supremacy MMA raises the bar in the MMA space by bringing an unprecedented level of fluid combat, intuitive controls and true-to-the-sport brutality.

Originally released for the SEGA Saturn in 1996, Guardian Heroes is a a classic Action-RPG Brawler that has been re-mastered with enhanced graphics, online co-op and battle modes, all-new modes of play, and more.