Left 4 Dead is a cooperative first-person shooter video game with survival horror elements, developed by Turtle Rock Studios and published by Valve Corporation. The game uses Valve's proprietary Source engine, and is available for Microsoft Windows, Xbox 360 and Mac OS X. Development on the game was completed on November 13, 2008, and two versions were released digitally: A …

Alien Swarm is a top-down shoot-em-up set at a 60 degree angle. Four players can join a single co-operative game, the aim of which is to progress through science fiction themed levels while eliminating waves of aliens. Players can choose from 40 different weapons. The game includes persistent statistics, unlockables and achievements.

Play the world's number 1 online action game. Engage in an incredibly realistic brand of terrorist warfare in this wildly popular team-based game. Ally with teammates to complete strategic missions. Take out enemy sites. Rescue hostages. Your role affects your team's success. Your team's success affects your role.

Team Fortress 2 is the sequel to the game that put class-based, multiplayer team warfare on the map.This year’s most anticipated online action game, TF2 delivers new gametypes, a signature art style powered by Valve’s next generation animation technology, persistent player statistics, and more.

Ricochet is a deathmatch game notable for its apparent simplicity, inspired by arcade games and platform games in both concept and design. Players jump between neon-lit platforms suspended above an abyss, and shoot disks at one another, trying to push the opponent off the platform and into the depths. There are also horizontal barriers which the disks can bounce off …

Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following. The single-player portion of Portal 2 introduces a cast of dynamic new characters, a host of fresh puzzle elements, and a much larger set of devious test chambers. Players will explore never-before-seen areas …

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 …

Set in the zombie apocalypse, Left 4 Dead 2 (L4D2) is the highly anticipated sequel to the award-winning Left 4 Dead, the #1 co-op game of 2008. This co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns. You'll play as one …

From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters. Set in the immediate aftermath of the zombie apocalypse, L4D's survival co-op mode lets you blast …

Half-Life Deathmatch: Source is a Source engine port of the multiplayer portion of Half-Life. It was released on Steam on July 2, 2005. The game is given to players for free as part of their purchase of Half-Life: Source. As a port, the game possesses several differences with the original multiplayer component of Half-Life, such as the Colt Python lacking …

Lost Coast opens with the protagonist, Gordon Freeman, finding himself near a group of decaying piers, underneath a monastery set up on rocks and overlooking the small town of St. Olga. A fisherman recognizes Gordon and directs him to the monastery, which the enemy Combine are using as a platform to launch artillery shells filled with headcrabs into the town. …

Continuing with Valve's policy of orienting each episode around a particular theme or set of technologies, Episode Two aims to focus on expansive environments, travel and less linear play. Following the closing events of Episode One, it sees Gordon Freeman and the series' other major players moving away from City 17 to the surrounding countryside.

The game's events take place immediately after those in Half-Life 2, in and around war-torn City 17. Episode One follows scientist Gordon Freeman and his companion Alyx Vance as they fight in humanity's continuing struggle against the transhuman race known as the Combine. When the story begins, Gordon wakes up outside the enemy's base of operations, the Citadel, after being …

Fast multiplayer action set in the Half-Life 2 universe! HL2's physics adds a new dimension to deathmatch play. Play straight deathmatch or try Combine vs. Resistance teamplay. Toss a toilet at your friend today!

Dota 2 is a multiplayer online battle arena video game and the stand-alone sequel to the Defense of the Ancients (DotA) mod. Developed by Valve Corporation, the game was officially released on July 9, 2013 as a free-to-play title for Microsoft Windows, concluding a beta testing phase that began in 2011. OS X and Linux versions of Dota 2 were …

Dino D-Day is a multiplayer team-based first-person shooter video game developed by 800 North and Digital Ranch. It was released for Microsoft Windows on April 8, 2011.

Counter-Strike: Global Offensive expands upon the team-based first person shooter gameplay the original Counter-Strike pioneered when it launched in 1999. Two teams compete in multiple rounds of objective-based game modes with the goal of winning enough rounds to win the match. CS:GO features new maps, characters, and weapons and delivers updated versions of the classic Counter-Strike maps like Dust, Inferno, …

Condition Zero: Deleted Scenes is what is left over from Ritual Entertainment's stage of development, a series of eighteen unconnected single-player missions. Deleted Scenes was originally the focus on the game with standard multiplayer included. However, after declaring the game gold and handing out review copies of Ritual's work, Valve saw an average review score of around 60%. The companies …

Just as in Half-Life 2, the player takes control of Gordon Freeman. However, unlike the other games in the Half-Life series, Codename: Gordon is set in a two-dimensional world. The sidescroller shooter game offers the player the ability to control Gordon by using the keyboard for movement, and the mouse for aiming and firing weapons

A City Sleeps follows Poe, youngest member of The Silk, an ancient clan of dream exorcists that can enter the minds of sleeping hosts to rid their dreams of demons. When the residents of SanLo fall into an endless slumber, only Poe can rescue them from a never-ending nightmare. Equipped with her legendary Koto-sword “Heartstrings”, and flanked by her stable …

The Orange Box is a compilation that contains five games, all powered by Valve's Source engine. The games included are: Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal and Team Fortress 2. Two of the games included, Half-Life 2 and its first stand-alone expansion, Episode One, had previously been released as separate products. Three new games were …

Left 4 Dead 2 is the sequel to the best-selling and critically-acclaimed co-op multiplayer smash from Valve, creators of the Half-Life, Portal, Team Fortress and Counter-Strike game properties. With multiple multiplayer options both on and offline, extensive AI custom functionality, four character options, new melee weapons and more, Left 4 Dead 2 promises to become one of 2009's best games …

The Orange Box is a compilation that contains five games, all powered by Valve's Source engine. The games included are: Half-Life 2, Half-Life 2: Episode One, Half-Life 2: Episode Two, Portal and Team Fortress 2. Two of the games included, Half-Life 2 and its first stand-alone expansion, Episode One, had previously been released as separate products. Three new games were …