Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community.
Available free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.
Along with the game get the complete code base for Alien Swarm that features updates to the Source engine as well as the SDK. Alien Swarm adds 3rd person camera, depth of field, improved dynamic shadows and a wide variety of gameplay additions to the Source engine.
- Tactical, 4 player co-op action game with a top-down perspective
- Complete game code and mod tools
- Unlock persistent items by gaining levels
- Over 40 weapons and equipment with countless loadout configurations
- 4 unique classes and 8 unique characters
- Matchmaking, Steam Cloud, Steam Stats
- 64 achievements
- Tile-based map generation tool
- Powered by Source and Steam
Introducing Aperture Desk Job, a free playable short game set in the universe of the Portal game series.
Artifact is a digital card game coming from the makers of Dota®2 and Steam®. A collaboration of legendary card game designer Richard Garfield and computer game and technology maker Valve (Dota 2, Steam), Artifact is designed to give Trading Card Game (TCG) enthusiasts the deepest gameplay and highest fidelity experience ever in a fantasy card game. It features more than 280 cards in the shipping set, including 44 heroes. Targeted for release on Steam in late 2018, players will be able to buy and sell cards on the Steam Community Marketplace. Artifact will also be supported as a service through expansions, competitive events, and new features.
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 is a multiplayer first-person shooter initially created by Minh Le and Jess Cliffe as a mod for Half-Life. By the fifth beta, Valve Software started actively participating in the development and ultimately bought the rights to the game and offered the original developers jobs at the company which both of them accepted. This edition was the first standalone release of Counter-Strike and Half-Life was not required to play the game.
Counter-Strike Nexon: Studio 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!
With its extensive Tour of Duty campaign, a near-limitless number of skirmish modes, updates and new content for Counter-Strike's award-winning multiplayer game play, plus over 12 bonus single player missions, Counter-Strike: Condition Zero is a tremendous offering of single and multiplayer content.
CS:GO is the fourth iteration of Valve's team-based modern-military first-person shooter that features new and updated versions of the classic CS content. While expanding the franchise, the game also introduces new gameplay modes, matchmaking and leader boards.
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. And, as war rages, players must work together with their squad to accomplish a variety of mission-specific objectives.
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.
Dota 2 is a multiplayer online battle arena video game and the stand-alone sequel to the Defense of the Ancients (DotA) mod. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
Valve's official version of the Dota Auto Chess mod.
Dota Underlords is a new stand-alone game that pits you against seven opponents in a battle of wits that will have you building, combining, and leveling-up a crew in a battle of dominance for the city of White Spire. In this game, victory is determined not by twitch reflexes, but by superior tactics.
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. You spawn objects and weld them together to create your own contraptions - whether that's a car, a rocket, a catapult or something that doesn't have a name yet - that's up to you. You can do it offline, or join the thousands of players who play online each day. If you're not too great at construction - don't worry! You can place a variety of characters in silly positions. But if you want to do more, we have the means.
Dr. Gordon Freeman doesn't speak, but he's got a helluva story to tell. This first-person roller-coaster initiated a new era in the history of action games by combining engrossing gameplay, upgraded graphics, ingenious level design and a revolutionary story that may not be all that it seems, told not through cutscenes, but through the visual environment.
1998. HALF-LIFE sends a shock through the game industry with its combination of pounding action and continuous, immersive storytelling.
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 them, from the physical environment to the behaviors even the emotions of both friends and enemies.
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!
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: 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.
Set between the events of Half-Life and Half-Life 2, Alyx Vance and her father Eli mount an early resistance to the Combine's brutal occupation of Earth.
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 a path through the infected in four unique “movies,” guiding your survivors across the rooftops of an abandoned metropolis, through rural ghost towns and pitch-black forests in your quest to escape a devastated Ground Zero crawling with infected enemies. Each "movie" is comprised of five large maps, and can be played by one to four human players, with an emphasis on team-based strategy and objectives.
New technology dubbed "the AI Director" is used to generate a unique gameplay experience every time you play. The Director tailors the frequency and ferocity of the zombie attacks to your performance, putting you in the middle of a fast-paced, but not overwhelming, Hollywood horror movie.
Addictive single player, co-op, and multiplayer action gameplay from the makers of Counter-Strike and Half-Life Versus Mode lets you compete four-on-four with friends, playing as a human trying to get rescued, or as a zombie boss monster that will stop at nothing to destroy them.
Left 4 Dead 2 is a cooperative first-person shooter video game, the sequel to Valve Corporation's Left 4 Dead. The Game builds upon cooperatively focused gameplay and Valve's proprietary Source engine, the same game engine used in the original Left 4 Dead. Set during the aftermath of an apocalyptic pandemic, Left 4 Dead 2 focuses on four new Survivors, fighting against hordes of the Infected, who develop severe psychosis and exhibit zombie-like tendencies. The Survivors must fight their way through five campaigns, interspersed with safe houses that act as checkpoints, with the goal of escape at each campaign's finale.
Waking up in a seemingly empty laboratory, the player is made to complete various physics-based puzzle challenges through numerous test chambers in order to test out the new Aperture Science Handheld Portal Device, without an explanation as to how, why or by whom.
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.
Choose from a selection of 9 classes, each with entertaining personalities and a different set of gameplay mechanics, to capture or defend the objective within numerous game modes against the enemy team, with a variety of unlockable and tradable weapons and cosmetics which add a layer of customization to each player's experience.
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.
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.