[Xbox Live Arcade] The original role-playing arcade game lets four adventurers explore together as a warrior, valkyrie, wizard, and elf. Traverse the darkest of mazes, destroying vile beasts and claiming gold. Consume food to regain your strength, collect keys to journey deeper, and seek out potions to defeat your most powerful foes. Xbox Live multiplayer game mode. High-definition enhanced art (480p, 720p, and 1080i). Experience-based ranking system. Ability to post to scores to the Xbox Live leaderboards. [Xbox.com]

Quake 4 is the first game to utilize id Software's revolutionary DOOM 3 technology. In the game, you are Matthew Kane, an elite member of Rhino Squad and Earth's valiant invasion force. Fight alone, with your squad, and in hover tanks and mechanized walkers as you engage in a heroic mission into the heart of the Strogg war machine. But, in this epic war between worlds, the only way to defeat the Strogg is to become one of them. Battle through early missions as a deadly marine, then after your capture as a marine-turned-Strogg with enhanced abilities and the power to turn the tide of the war. [Activision]

Brought to life in high definition, Perfect Dark: Zero challenges players to guide Joanna Dark on her journey to become the perfect agent. Years before the original "Perfect Dark," players assume the role of Perfect Agent Joanna Dark in a gripping story, with the action in this sci-fi thriller centered on espionage, conspiracy, and a mysterious global conflict. The game delivers unprecedented online action and flexibility, supporting upwards of 50 players online. Perfect Dark: Zero includes fully scalable environments, and complete online support with tournaments, rankings, and more. Players can choose between a story-driven single-player campaign and various multiplayer options, including four-player splitscreen and cooperative action, for infinite replayability. Combat enabled vehicles including jetpacks, hovercrafts, and motorcycles are also available. [Microsoft]

Call of Duty 2 lets players experience four individual soldier stories as they overcome insurmountable odds in multiple campaigns. Players have the freedom to follow each of the four storylines through for the ultimate character-driven experience, or they can engage in the historic battles chronologically for quick hitting action. Infinity Ward has also expanded the scope of combat to deliver a truly realistic battlefield experience. Squads now have the freedom to take on a variety of mission objectives, on expansive battlefields that allow for multiple paths and the ability to utilize actual combat tactics like outflanking and fire and maneuver capabilities. Call of Duty 2's new engine and A.I. technology set the stage for authentic squad combat and astonishing action. Concealment can be key as battlefield smoke or even deployed smoke grenades cloud visibility. Weather effects such as the dusty sandstorms of North Africa and whiteout blizzard conditions of Russia, for example, will keep soldiers glued to their bunkers. The team has also employed a state-of-the-art Battle Chatter System that brings the action to life as squad-mates bark out context-sensitive updates in real-time to players through an advanced A.I. system. [Activision]