Call of Duty: World at War changes the rules of engagement by redefining WWII gaming and thrusting players into tension-filled, unforgiving battles against a new ferocious enemy in the most dangerous and suspenseful action ever. All weekend long the Co-Op Nazi Zombies playlist for XBL and PSN public games have been unlocked, and you'll get Double XP in multiplayer.

Encompassing a variety of different characters while exploring many exotic locations and cultures across the game's universe of parallel worlds, Suikoden: Tierkreis will expand the bounds of the handheld RPG.

Sony Online Entertainment has signed a distribution agreement with Valve to bring its MMO titles to Steam, starting with the EverQuest and EverQuest II collections, as well as Vanguard: Saga of Heroes and Pirates of the Burning Sea.

Set 20 years after the events of the original, Star Ocean 2 also receives the full remake treatment aboard the PSP. The title takes the next step with fully animated movies, new character designs, extra playable characters, fully voiced dialogue, and more.

Rock Band 2 builds upon the original to introduce co-op band gameplay, multiple instruments, online multiplayer, unparalleled downloadable content and raises the bar by delivering an entirely new level of depth, connectivity, authenticity and features.

Resistance: Retribution is a 3rd person adventure with an all new story, levels, weapons and enemies, as well as a proprietary targeting system and game engine that pushes the system to its limit, allowing more detailed characters, special effects, and terrain that captures the look and feel of the Resistance universe. Pre-order at Amazon or GameStop and get a demo download code, which features single player as well as Resistance Connect with both the Infected mode and Resistance: Retribution Plus.

Resident Evil 5 promising to revolutionize the survival horror series by delivering an unbelievable level of detail, realism and control. The Collector's Edition ($89.99) includes a Tricell messenger bag, Chris Redfield figurine, BSAA patch and Kijuju-inspired pendant. The game itself will be packaged in a custom made steel case featuring a two disc set including a bonus disc with The Making of feature, an digital art gallery, and a Resident Evil Degeneration trailer.

SEGA's The House of the Dead: Overkill, developed by London-based studio Headstrong Games, is an all-new pulp-horror reinvention of the light-gun shooter franchise, taking you right back to the beginning of this classic horror series.

Project Origin continues F.E.A.R.'s supernatural suspense story of an escalating paranormal crisis that threatens to destroy a major American city. Alma now has free reign, and the consequences will be unimaginable. The F.E.A.R. 2 single player demo for F.E.A.R. 2: Project Origin will be available for the X360, PC, and PS3 beginning Jan. 22.

Pop 'Em Drop 'Em Samegame features classic puzzle gameplay in which you match two or more colored blocks to clear them. As blocks are cleared, the remaining blocks will shift. If you're skilled enough, bonus points are awarded when all blocks are cleared.