Doritos will once again offer the creative opportunity to video game lovers with the chance to design a new Xbox Live Arcade game as its "Unlock Xbox," design contest returns putting the creative control to design an Xbox Live Arcade game in consumers' hands.

Combining fast paced action with strategic battle planning, Darwinia features a novel and intuitive control mechanism, an '80s retro classics graphical style, and a story concerning a tribe of video game sprites trapped in a modern 3D game world.

Set in a medieval world on a volcanic Mediterranean island, Risen unfolds over 4 chapters and offers multiple ways to develop the story by your actions and decisions. An intuitive user control interface will support both casual and hardcore gamers alike.

Sherlock Holmes is back with probably the series’ most terrifying investigation. The player will launch into the hunt for the most dangerous serial killer in England’s history: Jack the Ripper.

The Warriors: Street Brawl features six missions of three levels each for a total of 18 arcade-style battles. Staying true to the movie, The Warriors: Street Brawl begins at the gang summit in Van Cortland Park and continues as players fight hordes of notorious rivals in a life or death battle to their home turf.

The new Game Room on Xbox LIVE, which will be the place to relive the glory days of arcade games, with over 1000 games being released throughout the next three years

Dragon Age: Origins represents BioWare’s return to its roots, delivering a fusion of elements from existing fantasy works with emotionally-driven narrative, heart-pounding combat, powerful magic abilities and credible digital actors. After briefly bring released yesterday, an unforeseen issue with the  specialization classes forced Bioware to pull it again.

Alien Breed Evolution is an action packed, tense single player adventure and an absolute blast of a co-op game, a “retro-modern” remake of the 1991 original that helped the now indie dev/publisher burst onto the Amiga scene 18 years ago.

South Park Let's Go Tower Defense Play! is a fast-paced action/strategy game that combines these lovable characters with snowball battles and tower defense tactics.

In Divinity II: Ego Draconis, players find themselves once again in Rivellon, a timeless world full of awe and magic, shattered and frightened by the apocalyptic wars of the past. No one knows why so many people had to give their lives. Everything seems to be over, but the peace was deceptive, for the demon has returned and the horror once again runs its course.

Ball your way up to the top of the league and play to your fullest to get the crowd pumped. The fusion of "rhythm" and "puzzle" creates a completely new kind of game in 0D Beat Drop! Drop pieces along with the beat, and go for the win with explosive chains.

You’ve wrapped your gifts, put the finishing touches on decorations, and created your version of frosty the snowman in the front yard. Whether you’re spending the Holidays with your extended family, close friends, or just that special someone this year, Xbox Live has lots to keep you entertained (and sane) at home during the Holidays. So grab a blanket, a hot cup of cider, and let it snow, let it snow, let it snow!

With Band Hero, you can come together with family and friends to ascend the virtual stage and rise to fame, bringing you a new genre of music focused on today’s hottest top-40 hits and classic anthems that everyone will know.

Earth is under attack by massive creatures from outer space. Now you can save Earth with a huge arsenal of heavy-power artillery at your disposal. Climb into your fighter jet and wage fierce battles against these gruesome aggressors, giving you full range of motion and attack while you engage in airstrikes over real world cities such as Tokyo, New York and Paris.

Twin Blades is a frantic shooter set in a medieval-fantasy zombie-filled universe boasting unique manga-stylized graphics. Players incarnate the cute scythe-waving nun with a mission to clear the city of all its undead inhabitants.

Earth is under attack by massive creatures from outer space. Now you can save Earth with a huge arsenal of heavy-power artillery at your disposal. Climb into your fighter jet and wage fierce battles against these gruesome aggressors, giving you full range of motion and attack while you engage in air strikes over real world cities such as Tokyo, New York and Paris.

Poised to feature the most authentic, entertaining and compelling simulation of WWE programming to date across multiple videogame platforms, WWE SmackDown vs. Raw 2010 will introduce inspiring creative and online freedom, significant franchise improvements and a comprehensive roster of today’s most prominent WWE Superstars and Divas.

Vancouver 2010 is an authentic simulation of a host of events from the upcoming Vancouver 2010 Olympic Winter Games, focusing on the adrenalin rush that comes from the extreme speed of winter sports. Including the all new challenge mode, it will allow players to immerse themselves in the world's greatest sporting event like never before.

Let Xbox Live Marketplace fill your December with holiday surprises, as starting Dec. 18 through Dec. 31 you can enjoy limited time, one-day discounts on select Xbox Live  Marketplace content every day XBLA titles, Games on Demand, movies, add-ons, holiday themes, you name it!

When Microsoft launched Facebook, Twitter, Last.fm on Xbox 360 consoles last month, transforming Xbox Live into the largest social network connected to the TV with exclusive features custom-designed for the living room, it restricted access to minors, which has now been patched (Dec. 15th in the US) so everybody can access the new apps/features.

The next installment in Activision's next band-centric rhythm game will feature a wide variety of hits from the hard-rock supergroup's three-decade catalog, including tracks from Queen, Weezer, Blink 182, The Offspring, and Queens of the Stone Age.

The objective of Qix is to fence off, or “claim”, a supermajority of the playfield. At the start of each level, the playing field is a large, empty rectangle, containing the Qix — a sticklike entity that performs graceful, but unpredictable motions within the confines of the rectangle.

In Tecmo's third-person shooter players take on the role of the massive, gun-wielding warrior Syd and battle through intense action sequences in an unpredictable, shape-shifting battlefield. In addition to single player campaign, Quantum Theory also supports four modes of online multiplayer, complete with voice chat for real-time communication.

In Fairytale Fights players choose one favorite fairytale character with whom they will try and save a fantasy world from certain doom. Luckily many different weapons lay around in this fairytale world, which players can use to shoot and carve up enemies… and this is where the fun begins!

Doritos will once again offer the creative opportunity to video game lovers with the chance to design a new Xbox Live Arcade game as its "Unlock Xbox," design contest returns putting the creative control to design an Xbox Live Arcade game in consumers' hands.