28 Valve Corporation games

Alien Swarm is a multiplayer top-down shooter video game developed by Valve. It is a remake of a mod for Unreal Tournament 2004, and it was developed by the original team, who were hired by Valve during the course of the development process.

Aperture Hand Lab is a roomscale virtual reality (VR) video game developed by Canadian studio Cloudhead Games and Valve, and released for Microsoft Windows on June 25, 2019. It is a tech demo that showcases the functions of the hand, knuckle, and finger tracking technology used by the Valve Index. The HTC Vive headset is also supported. The game is set in the Portal universe.

Artifact is a digital collectible card game developed and published by Valve. It focuses on online player versus player battles across three boards called lanes, and is based upon the universe of Dota 2, a multiplayer online battle arena game also from Valve. Artifact was designed by Magic: The Gathering creator Richard Garfield. It was released for Microsoft Windows, macOS, and Linux in November 2018, with versions planned for Android and iOS.

Half-Life: Blue Shift is an expansion pack for the first-person shooter video game Half-Life (1998). It was developed by Gearbox Software with Valve and published by Sierra On-Line. Blue Shift was the second expansion for Half-Life, originally intended as part of a Dreamcast port of Half-Life. Although the Dreamcast port was cancelled, the Windows version was released as a standalone product on June 12, 2001 for Windows. It was released on Steam on August 24, 2005.

Counter-Strike is a first-person shooter video game developed by Valve. It was initially developed and released as a Half-Life modification by Minh "Gooseman" Le and Jess Cliffe in 1999, before Le and Cliffe were hired and the game's intellectual property acquired. Counter-Strike was released by Valve for Microsoft Windows in 2000. The game is the first installment in the Counter-Strike series. Several remakes and ports have been released on Xbox, as well as OS X and Linux.

Counter-Strike: Condition Zero is a first-person shooter video game developed by Ritual Entertainment, Turtle Rock Studios, and Valve, and published by Sierra Entertainment and Valve. The follow-up to Counter-Strike (1999), it was released in March 2004 for Windows. Condition Zero utilizes the GoldSrc engine and has a multiplayer mode, which features updated character models, textures, maps and other graphical tweaks. It also includes two single-player campaigns; Tour of Duty and Condition Zero: Deleted Scenes.

Counter-Strike: Source is a first-person shooter video game developed by Valve and Turtle Rock Studios. Released in November 2004 for Windows, it is a remake of Counter-Strike (2000) using the Source game engine. As in the original, Counter-Strike: Source pits a team of counter-terrorists against a team of terrorists in a series of rounds. Each round is won either by completing an objective or by eliminating all members of the enemy team. The game was initially bundled with all retail and digital copies of Half-Life 2, before being released standalone.

The Crossing was set to be a first-person shooter video game by Arkane Studios, which attempted to fuse single-player and multiplayer by threading its single-player campaign through live multiplayer games.

Day of Defeat is a team-based multiplayer first-person shooter video game set in the European theatre of World War II on the Western front. Originally a modification of the 1998 game Half-Life, the rights of the modification were purchased by Valve and released as a full retail title in 2003.

Day of Defeat: Source is a team-based online first-person shooter multiplayer video game developed by Valve. Set in World War II, the game is a remake of Day of Defeat. It was updated from the GoldSrc engine used by its predecessor to the Source engine, and a remake of the game models. The game was released for Microsoft Windows on September 26, 2005, distributed through Valve's online content delivery service Steam. Retail distribution of the game was handled by Electronic Arts.

Dota 2 is a multiplayer online battle arena (MOBA) video game developed and published by Valve. The game is a sequel to Defense of the Ancients (DotA), which was a community-created mod for Blizzard Entertainment's Warcraft III: Reign of Chaos and its expansion pack, The Frozen Throne. Dota 2 is played in matches between two teams of five players, with each team occupying and defending their own separate base on the map. Each of the ten players independently controls a powerful character, known as a "hero", who all have unique abilities and differing styles of play. During a match players collect experience points and items for their heroes to successfully defeat the opposing team's heroes in player versus player combat. A team wins by being the first to destroy the other team's "Ancient", a large structure located within their base.

Dota Underlords is an auto battler game developed and published by Valve. The game is based on a popular Dota 2 community created game mode called Dota Auto Chess, which was released in January 2019. Dota Underlords was first released free-to-play in early access in June 2019 before officially releasing on February 25, 2020 for Android, iOS, macOS, Microsoft Windows, and Linux.

Half-Life is a series of first-person shooter (FPS) games developed and published by Valve. The games combine shooting combat, puzzles, and storytelling.

Half-Life is a first-person shooter video game developed by Valve and published by Sierra Studios for Microsoft Windows in 1998. It was Valve's debut product and the first game in the Half-Life series. Players assume the role of Gordon Freeman, a scientist who must escape the Black Mesa Research Facility after it is invaded by aliens. The core gameplay consists of fighting alien and human enemies with a variety of weapons and solving puzzles.

Half-Life 2 is a 2004 first-person shooter game developed and published by Valve. Like the original Half-Life, it combines shooting, puzzles, and storytelling, and adds features such as vehicles and physics-based gameplay. Players control Gordon Freeman, who fights the alien Combine with allies including resistance fighter Alyx Vance, using weapons such as the object-manipulating gravity gun.

Half-Life 2: Deathmatch is a multiplayer first-person shooter video game developed by Valve. Released on Steam on November 30, 2004, it uses many of the assets from Half-Life 2 and its Source engine. It features new levels, optimized for multiplayer arena play, and a few new weapons. Also included are portions of the game's source code, which were the basis for many early Source-based multiplayer modifications. The game is the successor to the popular multiplayer component of the original Half-Life, but is offered as a separate product from Half-Life 2. Deathmatch, like Half-Life's multiplayer, does not develop any part of the plot or story of the Half-Life series.

Half-Life 2: Episode One is a 2006 first-person shooter game developed and published by Valve. Like previous Half-Life games, it combines shooting, puzzle-solving, and narrative. Players control scientist Gordon Freeman, who, alongside his companion Alyx Vance, must escape City 17 before an explosion destroys it.

Half-Life 2: Episode Two is a 2007 first-person shooter game developed and published by Valve. Following Episode One (2006), it was the second in a planned trilogy of shorter episodic games that continue the story of Half-Life 2 (2004).

Half-Life 2: Lost Coast is an additional level for the 2004 first-person shooter video game Half-Life 2. Developed by Valve, it was released on October 27, 2005, through the Steam content delivery service as a free download to owners of the Windows version of Half-Life 2. Lost Coast serves as a technology demonstration, specifically showcasing the high-dynamic-range rendering implemented in the Source engine. The level was designed with a variety of appropriate environments to emphasize these effects. Lost Coast was the first video game developed by Valve to allow developers to explain various elements of design as the player progresses through the level.

Half-Life: Decay is a multiplayer-only expansion pack for Valve's first-person shooter Half-Life. Developed by Gearbox Software and published by Sierra On-Line, Decay was released as part of the PlayStation 2 version of Half-Life in 2001. It is the third expansion pack for Half-Life, and like its predecessors, Decay returns to the setting and timeline of the original story, albeit portraying the story from the viewpoint of a different set of protagonists: two female scientists working in the Black Mesa Research Facility. Decay is a cooperative multiplayer game, designed to be played by two people working together to pass through the game's levels.

Half-Life: Opposing Force is an expansion pack for the first-person shooter game Half-Life. The game was developed by Gearbox Software and Valve and published by Sierra On-Line for Windows on November 19, 1999. Opposing Force was the first expansion for Half-Life and was announced in April 1999. Lead designer Randy Pitchford noted that he believed Gearbox was selected to develop Opposing Force because Valve, the creators of Half-Life, wanted to concentrate on their future projects. Over the course of development, Gearbox brought in a variety of talent from other areas of the video games industry to help bolster various aspects of design.

The Lab is a virtual reality (VR) video game developed by Valve and released for Windows on April 5, 2016. It uses VR technology to showcase a series of play experiences accessed through a hub room. The game is set in the Portal universe and offers eight different game types that involve short demo experiences that use different aspects of the VR capabilities. Variety is also offered beyond the experiences themselves by the amount of interactability with objects in the environment that is included.

Left 4 Dead is a 2008 multiplayer survival horror game developed by Valve South and published by Valve. 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 downloadable digital version, released on November 17, 2008, and a digital retail disc version, with a release date determined by region. The digital retail disc version was released in North America and Australia on November 18, 2008, and in Europe on November 21, 2008.

Left 4 Dead 2 is a 2009 multiplayer survival horror game developed and published by Valve. The sequel to Turtle Rock Studios's Left 4 Dead, it was released for Windows and Xbox 360 in November 2009, Mac OS X in October 2010, and Linux in July 2013.

Portal is a 2007 puzzle-platform game developed and published by Valve. It was released in a bundle, The Orange Box, for Windows, Xbox 360 and PlayStation 3, and has been since ported to other systems, including Mac OS X, Linux, and Android.

Portal 2 is a puzzle-platform game developed by Valve. It was released in April 2011 for Windows, Mac OS X, Linux, PlayStation 3, and Xbox 360. The digital PC version is distributed online by Valve's Steam service, while all retail editions were distributed by Electronic Arts.

Team Fortress 2 is a multiplayer first-person shooter game developed and published by Valve. It is the sequel to the 1996 Team Fortress mod for Quake and its 1999 remake, Team Fortress Classic. It was released in October 2007 as part of The Orange Box video game bundle for Windows and Xbox 360. A PlayStation 3 version followed in December 2007 when The Orange Box was ported to the system. Later in development, the game was released as a standalone title for Windows in April 2008, and was updated to support Mac OS X in June 2010 and Linux in February 2013. It is distributed online through Valve's digital retailer Steam, with Electronic Arts handling all physical and console ports of the game.

Team Fortress Classic is a 1999 first-person shooter video game developed and released by Valve. The game pits two teams against each other in online multiplayer matches; each team member plays as one of nine classes, each with different skills. The scenarios include capture the flag (CTF), territorial control, and escorting a "VIP" player.