The fourth title in the Metal Slug series joins the Xbox Live Arcade library as Metal Slug 3 arrives this Wednesday, Jan. 2 at 9:00 a.m. GMT (2:00 a.m. PST). An update of the original arcade version, Metal Slug 3 is a run-and-gun video game updated with HD graphics and now features co-op multiplayer over Xbox Live.

Kingdom Under Fire: Circle of Doom will take the franchise in a new direction as developer BLUESIDE and series director Henry Lee plan to create a truly next-generation action-RPG, departing from their well-known action-RTS formula. Microsoft has released a 1.2GB demo, now on XBL Marketplace. If you haven't yet, check our recent KuF: CoD preview ...

Devil May Cry 4 is the 4th installment in Capcom's series starring Dante, the gunslinging demon hunter, and introducing a new hero, Nero, who possesses a demonic arm that can pull in enemies or use them as projectiles. Last week Sony revealed its special DMC 4 bundle, and now Microsoft announced it also will be releasing a special bundle (37800 yen/230 €/$331) which will include a 20Gb Xbox 360, HDMI support, remote and a wireless controller, on top of the actual game itself of course.

The C&C series continues to thrive with Command & Conquer 3: Kane’s Wrath. As the expansion pack to Tiberium Wars, this RTS game returns to the Tiberium universe with Kane at the center of an epic new single player campaign. In a recent community Q&A with EALA, the C&C 3: Kane's Wrath developers revealed there will be no PC demo, only an X360 demo on Xbox Live.

Kingdom Under Fire: Circle of Doom is an Action RPG game where as the previous KUFire series were Action RTS titles that recreated realistic fantasy battlefields of massive scale. Circle of Doom focuses on the development of one character with easy-to-learn game system and control mechanics.

TimeShift is an FPS in which players control time to complete missions and defeat foes. The game will leverage first-of-its-kind gameplay abilities and functionality, and the latest graphics technology to create a unique action game experience.

Sensible World of Soccer draws on the '96/'97 original to recreate one of the most influential games of all time in HD. Challenge friends over Xbox Live, kick it solo in Career mode or flex your managerial muscles by leading a team to the Champions league! After being pulled earlier this week for a multiplayer bug, Sensible World of Soccer is available on Xbox Live Arcade

In Dark Messiah of Might and Magic: Elements, players will be introduced to the dark and unforgiving world of Ashan, scarred by a bloody history and threatened by the apocalyptic prophecy of the Dark Messiah. Ubisoft has released a single/multiplayer demo for its action/RPG, now available on Xbox Live.

WWE SmackDown vs. Raw 2008 features eight unique styles, each having its own strategy and exclusive attributes, new rosters, more environmental hot spots, improved out-of-ring action, enhanced online community support and much more.

Soldier of Fortune Payback continues with the organization know as The Shop where players take on the role of a hired mercenary, blasting their way through high-intensity combat situations in the world's most dangerous hot spots in the Middle East, Africa, Asia and Eastern Europe.

The Witcher is an action RPG, combining features of such games as Dungeon Siege, Baldur’s Gate: Dark Alliance, Gothic and Neverwinter Nights, incorporating a simple-yet-interesting game system, along with a complex plot and attractive 3D graphics. While CD Project has currently no official projects in the works, it seems the polish developer is looking for an Xbox 360 programmer, maybe to port its recently released action RPG to X360.

MX vs. ATV Untamed features bigger, more populated outdoor open-world environments, an X-cross career mode showcasing all eight vehicles and the all-new EnduroCross mode pitting gamers against logs, rocks, mud-pits and more, and illustrating the full potential of the game's Rhythm Racing physics engine.

Microsoft released the X360 HD DVD Emulator, enabling film studios and disc authoring companies to test the behavior of HD DVD disc content, including encoded video and HDi interactivity, in a virtual environment before committing to burning a single HD DVD disc.

Burnout Paradise gives players license to wreak havoc in Paradise City, the ultimate seamless racing battleground, with a massive infrastructure of traffic-heavy roads to abuse. EA has released a 835MB demo, now available on Xbox Live. It will probably show up later today on PlayStation Network.

Need for Speed ProStreet boasts impeccable precision and impressively detailed photorealistic graphics, effectively transporting you to the center of the action. It pushes the "Autosculpt" technology to a new level, allowing you to directly impact your car's performance for the first time as well as personalize its appearance.

As society succumbs to a worldwide energy crisis, a new global depression takes hold. Amidst this desperate backdrop, two superpower alliances emerge. Join the battle on the frontlines of tomorrow as the Western Coalition or the Red Star Alliance. THQ has released a 1.7GB demo on Xbox Live Marketplace.

Halo 3 players will be able to continue the fight as Microsoft has released the Heroic Map Pack, three all new multiplayer maps for its recent sci-fi FPS, the first in a series of downloadable content from Bungie Studios to come via Xbox LIVE.

Following a successful launch in the United States last year, all Xbox 360 owners connected to the internet in Canada, France, Germany, Ireland and the United Kingdom can now download to rent both high definition and standard definition movies direct to their console using Xbox LIVE Marketplace Video Store.

Killer 7 developer Goichi Suda, who is currently working on No More Heroes for the Wii, has revealed in an interview with Japanese magazine Dengeki that he might be looking at the Xbox 360 for his next project. When asked why, the Grasshopper founder said it was mainly due to the large fan base in North America, and that developing on the Xbox 360 would be a challenge, comparing it to "entering the Major Leagues."

Halo 3 players will be able to continue the fight as Microsoft announced three all new multiplayer maps to be released on Dec. 11 as part of the Heroic Map Pack, the first in a series of downloadable content from Bungie Studios to come via Xbox LIVE.

Culdcept SAGA features online competitive gameplay via Xbox Live, combining the thrilling luck and strategy of a board game with the depth of a trading card game to create a unique twist on traditional turn-based play. Namco Bandai has released a demo allowing you to try out the first map of the game as well as multiplayer matches for up to four players.

Kane & Lynch: Dead Men is a violent and chaotic journey of two men — a flawed mercenary and a medicated psychopath — and their brutal attitude towards right and wrong. This volatile partnership combined with innovative technologies allow for an unparalleled gaming experience.

Microsoft announced that the Xbox Live Marketplace Video Store will open for business in the UK, Ireland, France and Germany on 11th December. Standard definition movies will cost 250 MS Points, while the HD versions will set you back 380 MS Points.

Battle your way through the LEGO Star Wars universe playing online co-op via Xbox Live and get a chance to win the sinister black starship Rogue Shadow, awarded every hour throughout the weekend of Dec. 7-9. One lucky winner will be awarded the grand prize, a true collectible and faithful replica of the LEGO Death Star II.