The Orange Box Half-Life 2: 1998. Half-Life sends a shock through the game industry with its combination of pounding action and continuous, immersive storytelling. Valve's debut title wins more than 50 game-of-the-year awards on its way to being named Best PC Game Ever by PC Gamer. NOW. By taking the suspense, challenge and visceral charge of the original, and adding startling new realism and responsiveness, Half-Life 2 opens the door to a world where the player's presence affects everything around him, from the physical environment to the behaviors, and even emotions, of both friends and enemies. 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. Freeman is thrust into the unenviable role of rescuing the world from the wrong he unleashed back at Black Mesa. And a lot of people he cares about are counting on him. Half-Life 2: Episode One: Half-Life 2: Episode One is the first in a series of new adventures created by Valve that extends the Half-Life 2 single player experience. Stepping into the hazard suit of Dr. Gordon Freeman, you face the immediate repercussions of your actions in City 17 and the Citadel. Rejoin Alyx Vance and her robot, Dog, to once again aid the human resistance in their desperate battle against the totalitarian alien menace of the Combine. Episode One exposes Alyx's combat skills and knowledge of City 17 as the player battles side-by-side with her in this 4-6 hour adventure of greater density and detail than non-episodic releases. The intense gameplay delivered in Episode One is made possible only by Source, Valves proprietary engine technology, which has been enhanced with new rendering technology and advanced artificial intelligence to deliver new levels of graphics and character interaction. Portal: Portal is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay. The game is designed to change the way players approach, manipulate, and surmise the possibilities in a given environment; similar to how Half-Life 2s Gravity Gun innovated new ways to leverage an object in any given situation. Players must solve physical puzzles and challenges by opening portals to maneuvering objects, and themselves, through space. Half Life 2: Episode Two: Half-Life 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions. In Episode Two, you must battle and race against Combine forces as you traverse the White Forest to deliver a crucial information packet stolen from the Citadel to an enclave of fellow resistance scientists. Episode Two extends the award-winning Half-Life gameplay with unique weapons, vehicles, and newly-spawned creatures. Team Fortress 2: Team Fortress 2 (TF2) is the sequel to the game that put class-based, multiplayer team warfare on the map. This years most anticipated online action game, TF2 delivers new gametypes, a signature art style powered by Valves next generation animation technology, persistent player statistics, and more. Unlike other class-based games that offer a variety of combat classes only, Team Fortress 2 packs a wild variety of classes which provide a broad range of tactical abilities and personalities, and lend themselves to a variety of player skills. Play as the flame-throwing Pyro, the room clearing Heavy, or the Spy, a master of disguises. Other classes include: Scout, Sniper, Medic, Engineer, Demoman, or Soldier. TF2 features the most advanced graphics of any Source-based game released to date  and the most exciting class-based action ever created.