Portal: Still Alive

Action Shooter First-Person Sci-Fi Arcade

[Xbox Live Arcade] Portal: Still Alive features the full award-winning Portal single player game from Valve, plus a new challenge mode. Designed to change the way you approach, manipulate, and surmise the possibilities in any given environment, Portal has earned over 70 industry honors for its innovative gameplay, with more than 30 "Game of the Year" awards. Break the laws of physics using "portal" technology to solve puzzles and survive in this darkly comic story weaving adventure with brain-bending puzzles. Experience the first first-person puzzle-action-adventure game with hours of single player gaming. The game includes fourteen brand new bonus puzzles to challenge even the most skilled test subjects. And, get a glimpse into the making of Portal: Still Alive with commentary from the developers. [Valve]

Cloning Clyde

Action Platformer 2D

[Xbox Live Arcade] Have you ever been cloned? Ever wonder what it would be like to be a chicken? A monkey? A frog? Cloning Clyde is a 3-D side-scrolling adventure, featuring (of course!) multiplayer gameplay. Play split screen on a single console, or mutate online with your friends across the world. Can you free yourselves from the myriad sinister traps and mutations that await you? Get Cloning today and find out. Play as a variety of mutant Clydes, each with unique abilities, including Chicken-Clyde, Frog-Clyde, Sheep-Clyde, and more. Play not only as Clyde himself, but also as his hundreds of clones. On a single console, join with a friend in co-op mode, or go crazy with four player versus mode. Solve exciting and addictive puzzles with a variety of resolutions. Enjoy hours of fun with two distinct game modes including 40 cooperative levels and six versus arenas. Play online through Xbox Live with up to eight friends. [Microsoft]

Halo: Reach

Action Shooter First-Person Sci-Fi Arcade

From the beginning, you know the end. In Halo: Reach, players experience the fateful moments that forged the Halo legend. It's the story of Noble Team, a squad of heroic Spartan soldiers, and their final stand on the planet Reach, humanity's last line of defense between the terrifying Covenant and Earth. This darker story is echoed by grittier visuals amid a backdrop of massive, awe-inspiring environments. Characters, enemies and environments are rendered in amazing detail by an all-new engine designed to deliver epic-scale encounters against the cunning and ruthless Covenant.

Zero D Beat Drop

Action Miscellaneous Rhythm Music

[Xbox Live Arcade] 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. In addition to the single player mode with over 100 stages, online play includes options such as playing against a single player, playing with four players total, or having a team battle! The unique "Beat-O-Matic" function analyzes your own songs and lets you use them in the game. Feel the rhythm of the beat! [Arc System Works]