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Counter-Strike 2
Valve2023
For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.
Portal: Companion Collection
Valve2022
Break the laws of spatial physics in the hilariously mind-bending adventures of Portal and Portal 2! Including Portal and Portal 2, the Companion Collection comes with all the groundbreaking gameplay, dark humor, and exploration that earned the series hundreds of awards.
Aperture Desk Job
Valve2022
Introducing Aperture Desk Job — a free playable short made for the Steam Deck, set in the universe of the modestly popular Portal games.
Half-Life: Alyx
Valve2020
Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Playing as Alyx Vance, you are humanity’s only chance for survival.
Aperture Hand Lab
Cloudhead Games Ltd.2019
Experience the high fidelity virtual reality of your own hands like never before.
Dota Underlords
Valve2019
Hire a crew and destroy your rivals in this new strategy battler set in the world of Dota. Introducing Season One: Explore White Spire and earn rewards on the Battle Pass. Pick from several different game modes, play on your own or with friends, and take advantage of crossplay on PC and mobile.
Artifact
Valve2018
Artifact now features two games: Artifact Classic, the original Dota 2 trading card game, and Artifact Foundry, a special edition with streamlined gameplay, new cards, new single-player content, and an improved new player experience.
The Lab
Valve2016
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
Counter-Strike Nexon
Valve2014
Counter-Strike Nexon is a Free to Play MMOFPS offering competitive PvP and PvE action including content from the original Counter-Strike and all new game modes, map creation function, weapons, and hordes of Zombies!
Counter-Strike Online 2
Nexon Korea2013
Counter-Strike Online 2 is the sequel to Counter-Strike Online. Licensed by Valve Software to Nexon Corporation, it is officially released since 2013 and powered by the Source engine.
Dota 2
Valve2013
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
Spacewar
Valve2013
A hidden Steam game that was made to demonstrate Steamworks API.
Counter-Strike: Global Offensive
Valve2012
Counter-Strike: Global Offensive expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
Valve Complete Pack
Valve2011
The complete pack of all video games released by Valve.
Portal 2
Valve2011
The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!
Day of Defeat: Source
Valve2010
Valve's WWII Multiplayer Classic - Now available for Mac.
Alien Swarm
Valve2010
Co-operative multiplayer game and complete code base available for free.
Left 4 Dead 2
Turtle Rock Studios2009
Set in the zombie apocalypse, Left 4 Dead 2 is a 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.
Left 4 Dead: Game of the Year Edition
Valve2009
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 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 and Japan on November 21, 2008. Set during the aftermath of an apocalyptic pandemic, the game pits its four protagonists—dubbed the "Survivors"—against hordes of the infected. There are four game modes: a single-player mode in which allied characters are controlled by AI; a four-player, co-op campaign mode; an eight-player online versus mode; and a four-player survival mode. In all modes, an artificial intelligence (AI), dubbed the "Director", controls level pacing and item placements, in an attempt to create a dynamic experience and increase replay value. Left 4 Dead was well received by the industry media upon its release, with praise given for its replay value, focus on cooperative play, and movie-like experience. Several criticisms were aimed at limited level selection and the lack of a narrative. The game has won several publication awards, as well as distinctions from the Academy of Interactive Arts & Sciences and British Academy of Film and Television Arts. As was done with Team Fortress 2, Valve supplemented the game with free downloadable content. The first, called the "Survival Pack", was released on April 21, 2009. The second piece of DLC was charged for on Xbox Live and came in the form of a new Campaign entitled "Crash Course," released for both the PC and Xbox 360 on September 29, 2009. The popularity of the game led to the development of a sequel, Left 4 Dead 2, which was released November 17, 2009. Left 4 Dead 2 was released on Mac OS X via Steam on October 5, 2010, and the original Left 4 Dead was released for the Mac soon after on October 28, 2010. The Mac version of Left 4 Dead 2 incorporated a new map for both Left 4 Dead and Left 4 Dead 2, called "The Sacrifice". Eventually all Left 4 Dead campaigns were ported over to Left 4 Dead 2 and allowing for cross-platform support between Windows and Mac versions.
Left 4 Dead
Valve2008
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.
Portal: Still Alive
Valve2008
Portal: Still Alive is a retooled version of the original smash hit first-person puzzle game, with additional levels and challenges. As unwilling test subjects in a sinister laboratory, players must break the laws of physics using 'portal' technology to solve puzzles and survive. Featuring a darkly comic story that weaves adventure with brain-bending puzzles; 'Portal: Still Alive' also introduces 14 brand new bonus puzzles to challenge even the most skilled test subjects. Players can also get a glimpse into the making of 'Portal: Still Alive' with commentary from the developers.
The Orange Box
Valve2007
The Orange Box is a bundle that includes five titles from Valve: Half-Life 2; Half-Life 2:Episode 1; Half-Life 2: Episode Two; Team Fortress 2, the sequel to the game that put class-based, multiplayer team warfare on the map; and Portal, the game that blends puzzles, first person action, and adventure gaming to produce an experience like no other.
Portal
Valve2007
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.
Team Fortress 2
Valve2007
Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats!
Half-Life 2: Episode Two
Valve2007
The second episodic sequel to one of the most influential first-person shooters of its time, Half-Life 2.
The Ship: Murder Party
Outerlight2006
The Ship is a murder mystery multiplayer.
Half-Life 2: Episode One
Valve2006
Half-Life 2: Episode One is the first of a planned trilogy of expansion packs/episodes for the 2004 first-person shooter game, Half-Life 2. The episode takes place immediately after the end of Half-Life 2, in the war-torn setting of City 17. The player is forced to deal with the effects of their actions during the main game. The episode is a stand-alone game; while a continuation of Half-Life 2, it does not require the original game to be installed or registered to a user's Steam account to play. It takes advantage of several major upgrades to the Source engine since the release of Half-Life 2, primarily its high dynamic range rendering capabilities and the upgraded facial animation system. Episode One was released together with Half-Life Deathmatch: Source, a port of the original Half-Life's multiplayer, which doubles as Episode One's multiplayer component. The retail copies of Episode One also come with Half-Life 2 Deathmatch for those who have not previously purchased the later title.
Half-Life Deathmatch: Source
Valve2006
Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.
Half-Life 2: Lost Coast
Valve2005
Originally planned as a section of the Highway 17 chapter of Half-Life 2, Lost Coast is a playable technology showcase that introduces High Dynamic Range lighting to the Source engine.
Half-Life 1 Anthology
Valve2005
The Complete Half-Life 1 Collection. Step into the shoes of Gordon Freeman in the original Half-Life or experience different perspectives through the standalone expansions, Opposing Force and Blue Shift. Team Fortress Classic, a popular online shooter that was based on a mod for the original Quake, is also included.
Counter-Strike 1 Anthology
Valve2005
The original version of the #1 online action game in the world offers an action experience of incredible depth and realism. This Anthology also includes a collection of single player CS games and the official CS bot for skirmish play. Includes: Counter-Strike, Counter-Strike: Condition Zero, Day of Defeat, Deathmatch Classic, Ricochet
Source Multiplayer Pack
Valve2005
In 2005, the retail release of Counter-Strike: Source included Half-Life 2: Deathmatch and Day of Defeat: Source as bonus games. In 2010, Steam released a digital version of the same bundle as Source Multiplayer Pack.
Garry's Mod
Facepunch Studios2004
Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.
Half-Life 2: Deathmatch
Valve2004
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!
Half-Life 2
Valve2004
Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.
Counter-Strike: Source
Valve2004
Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology.
Codename: Gordon
Nuclear Vision2004
Codename: Gordon, also known as Half-Life 2D, is a two-dimensional Flash sidescroller shooter game made by Paul "X-Tender" Kamma and Sönke "Warbeast" Seidel. The game was produced on behalf of Nuclear Vision, and was distributed free of charge over Valve Software's Steam online delivery system as a promotional title for the then-upcoming Half-Life 2. The game has since been removed from Steam's storefront due to factors related to the developer's bankruptcy. The game started off as a fan project of Paul Kamma and Sönke Seidel, the concept being inspired by various Half-Life 2 advertisements. Soon after, the two started working on Codename: Gordon on behalf of Nuclear Vision. The company also presented the game to Valve, the developer team of the original Half-Life series, who later distributed the game through Steam.
Counter-Strike Neo
Namco2003
Counter-Strike Neo is a Japanese arcade adaptation of Counter-Strike, the original Half-Life multiplayer modification. It was published by Namco and runs on a Linux system. The game features unique maps, factions, and settings, though the gameplay and the weapon lineups remain the same as other Counter-Strike games, only with a huge difference in visuals.
Day of Defeat
Valve2003
Enlist in an intense brand of Axis vs. Allied teamplay set in the WWII European Theatre of Operations. Players assume the role of light/assault/heavy infantry, sniper or machine-gunner class, each with a unique arsenal of historical weaponry at their disposal. Missions are based on key historical operations.
Half-Life: Generation
Gearbox Software2002
A compilation of Valve's classic shooter and its many offspring, including Half-Life, Opposing Force, Counter Strike and Blue Shift.
Half-Life: Decay
Valve2001
Half-Life: Decay is an expansion pack for Valve Software's science fiction, first-person shooter video game Half-Life. Developed by Gearbox Software and published by Sierra Entertainment, Decay was released as part of the PlayStation 2 version of Half-Life. 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 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.
Deathmatch Classic
Valve2001
Enjoy fast-paced multiplayer gaming with Deathmatch Classic (a.k.a. DMC). Valve's tribute to the work of id software, DMC invites players to grab their rocket launchers and put their reflexes to the test in a collection of futuristic settings.
Half-Life: Blue Shift
Gearbox Software2001
Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.
Counter-Strike
Valve2000
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.
Ricochet
Valve2000
A futuristic action game that challenges your agility as well as your aim, Ricochet features one-on-one and team matches played in a variety of futuristic battle arenas.
Half-Life: Opposing Force
Gearbox Software1999
Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.
Team Fortress Classic
Valve1999
One of the most popular online action games of all time, Team Fortress Classic features over nine character classes -- from Medic to Spy to Demolition Man -- enlisted in a unique style of online team warfare. Each character class possesses unique weapons, items, and abilities, as teams compete online in a variety of game play modes.
Half-Life: Uplink
Valve1999
Half-Life: Uplink is a demo version of Valve's 1998 first-person shooter computer game Half-Life. Uplink features many of the common enemies, characters, and weapons from the full game, but unlike the first Half-Life demo and the Half-Life 2 demo, the location and scenario in this demonstration do not appear in Half-Life. The Uplink chapters were cut during Half-Life's development phase and roughly fit in prior to or during the Lambda Core chapter; they were, however, strongly revised for the demo release. Uplink also includes the same Hazard Course from the full release of Half-Life. It was also included on "Official PlayStation Magazine Disc 57" as a bonus unlock if you entered a cheat into the PS2 version of Half-Life and swapped the discs.
Half-Life
Valve1998
Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.
Deadlock
Valve
Deadlock is a multiplayer game in early development.
SteamVR
Valve
Grab SteamVR to access and play VR games using your HTC Vive, Oculus Rift, Windows Mixed Reality headset, or any other supported VR headset and controllers.
Half-Life 3
Valve
The long awaited final part of the Half-Life saga.
Half-Life 2: Episode Three
Valve
A cancelled sequel to Half-Life 2: Episode Two. The project was cancelled due to Valve scrapping the episodic releases as they wanted to make more ambitious full games. If this is released, it would be under the name Half-Life 3.