The Source engine is a 3D game engine developed by Valve Corporation. Its unique features include a large degree of modularity and flexibility, an artist-driven, shader-based renderer, accurate lip sync and facial expression technology, and a powerful, efficient and completely network-enabled physics system.

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Half-Life 2
Half-Life 2

1. Half-Life 2

1 month ago Released Nov 2004 Single & Multiplayer First Person Shooter

Pick up the crowbar of research scientist Gordon Freeman, who finds himself on an alien-infested Earth being picked to the bone, its resources depleted...

Vampire: The Masquerade – Bloodlines
Vampire: The Masquerade – Bloodlines

2. Vampire: The Masquerade – Bloodlines

3 months ago Released Nov 2004 Single Player Adventure

First-person roleplaying game, based on White Wolf's popular Vampire: The Masquerade pen-and-paper RPG. Vampire: The Masquerade - Bloodlines combines...

Counter-Strike: Source
Counter-Strike: Source

3. Counter-Strike: Source

2 weeks ago Released Oct 2004 Single & Multiplayer First Person Shooter

Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source technology. Featuring state of the...

Garry’s Mod 10
Garry’s Mod 10

4. Garry’s Mod 10

1 week ago Released Nov 2006 Single & Multiplayer First Person Shooter

Garry’s Mod is a sandbox mod for the Source Engine. Unlike normal games there aren't any predefined aims or goals. Players are given tools and are left...

Portal 2
Portal 2

5. Portal 2

2 months ago Released Apr 2011 Single & Multiplayer Puzzle Compilation

It’s been a long time. How have you been? I’ve been really busy being dead. You know... after you murdered me?

Left 4 Dead 2
Left 4 Dead 2

6. Left 4 Dead 2

5 months ago Released Nov 2009 Single & Multiplayer First Person Shooter

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...

Portal
Portal

7. Portal

4 weeks ago Released Oct 2007 Single Player Puzzle Compilation

Portal is a first-person puzzle game. Players must solve physical challenges by opening portals to maneuver objects, and themselves, through the enigmatic...

Counter-Strike: Global Offensive
Counter-Strike: Global Offensive

8. Counter-Strike: Global Offensive

2 months ago Released Aug 2012 Single & Multiplayer First Person Shooter

Counter-Strike: Global Offensive (CS: GO) will expand upon the team-based action gameplay that it pioneered when it was launched 12 years ago.

Team Fortress 2
Team Fortress 2

9. Team Fortress 2

1 month ago Released Oct 2007 Multiplayer First Person Shooter

Team Fortress 2 is the sequel to the game that put class-based, multiplayer team warfare on the map. It delivers new gametypes, a signature art style...

Half-Life 2: Episode Two
Half-Life 2: Episode Two

10. Half-Life 2: Episode Two

2 months ago Released Oct 2007 Single & Multiplayer First Person Shooter

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...

Alien Swarm
Alien Swarm

11. Alien Swarm

1 month ago Released Jul 2010 Single & Multiplayer Arcade

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...

Left 4 Dead
Left 4 Dead

12. Left 4 Dead

1 year ago Released Nov 2008 Single & Multiplayer First Person Shooter

Set in the immediate aftermath of the zombie apocalypse, Left 4 Dead's survival co-op mode lets up to four players blast a path through the swarming zombie...

Half-Life: Source
Half-Life: Source

13. Half-Life: Source

6 months ago Released May 2004 Single Player First Person Shooter

Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally...

Day of Defeat: Source
Day of Defeat: Source

14. Day of Defeat: Source

4 months ago Released Sep 2005 Single & Multiplayer First Person Shooter

Day of Defeat offers intense online action gameplay set in Europe during WWII. Assume the role of infantry, sniper or machine-gunner classes, and more...

E.Y.E: Divine Cybermancy
E.Y.E: Divine Cybermancy

15. E.Y.E: Divine Cybermancy

1 year ago Released Jul 2011 Single & Multiplayer First Person Shooter

After unending war with metastreumonic Force, the powerful organisation Secreta Secretorum that you belong to is finally ready to undermine the head-strong...

Half-Life 2: Deathmatch
Half-Life 2: Deathmatch

16. Half-Life 2: Deathmatch

5 months ago Released Oct 2004 Multiplayer First Person Shooter

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...

Half-Life Deathmatch: Source
Half-Life Deathmatch: Source

17. Half-Life Deathmatch: Source

2 years ago Released Apr 2006 Multiplayer First Person Shooter

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...

House Living Simulator 2015
House Living Simulator 2015

18. House Living Simulator 2015

5 months ago Released Jan 14, 2015 Single & Multiplayer First Person Shooter

Welcome to House Living Simulator 2015 the sequel to the hit game House Living Simulator 2013. Now you are no longer limited to live in just one house...

INFRA
INFRA

19. INFRA

6 days ago TBD Single Player Puzzle Compilation

Those most overlooked are often the most important. INFRA puts you into the shoes of a simple structural analyst. Nothing more than a quiet desk jockey...

Contagion
Contagion

20. Contagion

9 months ago Released Oct 24, 2013 Multiplayer & Co-op First Person Shooter

Contagion isn't your average Zombie Shooter but instead takes a more realistic and different approach to the popular genre with unique characters, environments...

Half-Life 2: Episode One
Half-Life 2: Episode One

21. Half-Life 2: Episode One

2 months ago Released May 2006 Single Player First Person Shooter

Episode One follows scientist Gordon Freeman and his companion Alyx Vance as they fight in humanity's continuing struggle against the transhuman race...

Insurgency
Insurgency

22. Insurgency

5 months ago Released Jan 22, 2014 Multiplayer & Co-op Tactical Shooter

TAKE TO THE STREETS FOR INTENSE CLOSE QUARTERS COMBAT, where a team's survival depends upon securing crucial strongholds and destroying enemy supply...

The Stanley Parable
The Stanley Parable

23. The Stanley Parable

1 year ago Released Oct 19, 2013 Single Player Realistic Sim

The Stanley Parable is an extremely simple and easy-to-explain game about choice, story, failure, and why none of it probably mattered in the first place...

Blade Symphony
Blade Symphony

24. Blade Symphony

6 months ago Released May 7, 2014 Multiplayer Fighting

Prove that you are the world's greatest swordsman in Blade Symphony: a slash-em-up featuring a highly detailed and in-depth sword fighting system. Face...

The Ship
The Ship

25. The Ship

3 years ago Released Nov 2006 Single & Multiplayer First Person Shooter

[NOTE: This Steam-only game comes with one key for yourself and two keys to give out to your friends, each of which have additional bonus keys attached...

Dark Messiah of Might and Magic
Dark Messiah of Might and Magic

26. Dark Messiah of Might and Magic

1 year ago Released Oct 2006 Single & Multiplayer First Person Shooter

Explore the secluded region of Ashan, where fearless orcs, wild goblins, dreadful undead, elusive trolls, gigantic dragons and many other creatures stunning...

Conscript
Conscript

27. Conscript

1 year ago TBD Single Player First Person Shooter

Conscript is a psp/pc game using the source engine and a heavily modified quake engine that takes place in an alternate half-life 2 universe, through...

Black Mesa
Black Mesa

28. Black Mesa

1 month ago TBD Single & Multiplayer First Person Shooter

Black Mesa is a re-envisioning of Valve Software's classic science fiction first person shooter, Half-Life. Powered by Source Engine, You will re-visit...

Lost Squad
Lost Squad

29. Lost Squad

4 months ago Coming Q4 2015 Single Player First Person Shooter

Lost Squad - is Source Engine based game about what happened to Barney Calhoun after Half-Life 2: Episode One events and why he was not in Half-Life 2...

SiN Episodes: Emergence
SiN Episodes: Emergence

30. SiN Episodes: Emergence

1 year ago Released May 2006 Single Player First Person Shooter

You are John Blade, commander of HardCorps, an elite security force dedicated to protecting the people of Freeport City. Four years have passed since...

Platforms
Windows, VR, X360, XBOX, PS3
Company
Valve
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Official Page
Valvesoftware.com
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Commercial
Release Date
Released Oct 2004
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Popular Games
Half-Life 2
Half-Life 2 Single & Multiplayer First Person Shooter
Vampire: The Masquerade – Bloodlines
Vampire: The Masquerade – Bloodlines Single Player Adventure
Counter-Strike: Source
Counter-Strike: Source Single & Multiplayer First Person Shooter
Garry’s Mod 10
Garry’s Mod 10 Single & Multiplayer First Person Shooter
Portal 2
Portal 2 Single & Multiplayer Puzzle Compilation
Left 4 Dead 2
Left 4 Dead 2 Single & Multiplayer First Person Shooter
Portal
Portal Single Player Puzzle Compilation
Counter-Strike: Global Offensive
Counter-Strike: Global Offensive Single & Multiplayer First Person Shooter
Team Fortress 2
Team Fortress 2 Multiplayer First Person Shooter
Half-Life 2: Episode Two
Half-Life 2: Episode Two Single & Multiplayer First Person Shooter
Alien Swarm
Alien Swarm Single & Multiplayer Arcade
Left 4 Dead
Left 4 Dead Single & Multiplayer First Person Shooter
Half-Life: Source
Half-Life: Source Single Player First Person Shooter
Day of Defeat: Source
Day of Defeat: Source Single & Multiplayer First Person Shooter
E.Y.E: Divine Cybermancy
E.Y.E: Divine Cybermancy Single & Multiplayer First Person Shooter