Portal - a pioneering type of single player action game that rewrites the rules for how players approach and manipulate their environment – much like how Half-Life 2's Gravity Gun reinvented the way gamers interact with objects in the game.

Half-Life 2: Episode Two - the second installment in Valve's episodic trilogy advances the award-winning story, leading the player to new locations outside of City 17. Freeman reconnects with Alyx Vance and her robot, Dog, as they continue their support of the resistance's battle against the Combine forces. Freeman, who must immediately face the repercussions of his actions in City 17 and the Citadel. Half-Life 2: Episode One - The player reprises his role of Dr.

And a lot of people - people he cares about - are counting on him. Freeman is thrust into the unenviable role of rescuing the world from the wrong he unleashed back at Black Mesa. Games included in The Orange Box compilation: The original Half-Life 2 - The player again picks up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted, its populace dwindling. Do you have what it takes to be the best? Use Nintendo Wi-Fi Connection to upload your score to the online leaderboards to see where you stack up or even view replays of top-ranking players' games and study their secrets.

Choose from pattern or random modes to vary the level of challenge, but the real indication of skill comes from competing with players around the world for the highest score possible. Collect a series of consecutive cubes to create a chain and boost your score even higher. Absorb energy cubes from destroyed enemies to replenish your energy gauge and increase your score. Progress through eight phases of action and take out enemies by tactically using your weapons: an unlimited-fire blaster weapon available to both ships and an energy-consuming special weapon unique to each craft. Two powerful fighters are at your disposal: the Accipiter and Bateleur, tailored for beginner or expert players. Battle wave after wave of relentless attackers aiming to do one thing - destroy you! Your goal, beyond mere survival, is simple: Get the highest score possible and earn bragging rights in online leaderboards. Prepare for a high level of intensity as you pilot a solo ship deep into enemy space in this vertically scrolling shooter.

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