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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96%
Half-Life 2

Half-Life 2

5,220 ratings 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...

96%
Portal

Portal

1,184 ratings Puzzle

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

96%
Half-Life 2: Episode Two

Half-Life 2: Episode Two

506 ratings 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...

95%
Garry’s Mod 10

Garry’s Mod 10

934 ratings 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...

95%
Portal 2

Portal 2

456 ratings Puzzle

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

94%
Vampire: The Masquerade – Bloodlines

Vampire: The Masquerade – Bloodlines

258 ratings Adventure

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

94%
Team Fortress 2

Team Fortress 2

597 ratings 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...

93%
Alien Swarm

Alien Swarm

353 ratings 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...

93%
Blade Symphony

Blade Symphony

84 ratings 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...

93%
Dark Messiah of Might and Magic

Dark Messiah of Might and Magic

132 ratings 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...

92%
Left 4 Dead

Left 4 Dead

552 ratings 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...

92%
VOID

VOID

19 ratings First Person Shooter

Have you ever wished you are able to go back in time to fix your wrongs and that things are back to what they use to be?" A complex two worlds design...

91%
Half-Life 2: Episode One

Half-Life 2: Episode One

209 ratings 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...

91%
Insurgency

Insurgency

101 ratings 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...

89%
Black Mesa

Black Mesa

9 ratings 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...

89%
Left 4 Dead 2

Left 4 Dead 2

484 ratings 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...

88%
The Ship

The Ship

92 ratings First Person Shooter

The Ship is a multiplayer game of subterfuge and assassination, played on a series of 1920s cruise ships. Hunt down and murder your quarry while looking...

88%
The Stanley Parable

The Stanley Parable

22 ratings 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...

88%
Half-Life 2: Lost Coast

Half-Life 2: Lost Coast

73 ratings First Person Shooter

Half-Life 2: Lost Coast is a playable technology showcase that introduces High Dynamic Range lighting to the Source engine. It is included with Half-Life...

88%
INFRA

INFRA

9 ratings Puzzle

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...

87%
Vindictus

Vindictus

20 ratings Hack 'n' Slash

Vindictus (Korean: 마비노기 영웅전, Mabinogi Heroes) is a free-to-play hack and slash massive multiplayer online role-playing game created by devCAT...

87%
Counter-Strike: Source

Counter-Strike: Source

522 ratings 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...

87%
Day of Defeat: Source

Day of Defeat: Source

140 ratings 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...

87%
E.Y.E: Divine Cybermancy

E.Y.E: Divine Cybermancy

128 ratings 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...

87%
The Ship Single Player

The Ship Single Player

3 ratings First Person Shooter

The Ship is owned by the mysterious Mr X and as one of many "lucky" recipients of a free ticket you arrive on board The Ship to find there's a catch to...

86%
Zeno Clash

Zeno Clash

176 ratings First Person Shooter

In the land of Zenozoik, the city of Halstedom is ruled by a powerful clan, one which Ghat has betrayed by committing a terrible sin. Now, Ghat's brothers...

85%
Half-Life: Source

Half-Life: Source

123 ratings 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...

85%
Silent Escape

Silent Escape

217 ratings First Person Shooter

Silent Escape is a first person shooter game, which events are unfolding parallel to the Half-Life 2 story. When situation in Сity-17 started to get...

85%
Dota 2

Dota 2

8 ratings MOBA

Defence of the Ancients pits two teams of five players against each other in highly competitive, 40-minute or longer matches. Each player controls a single...

85%
Titanfall

Titanfall

4 ratings First Person Shooter

Welcome to the Edge of Civilization. In Titanfall, many generations of humanity live in the deepest reaches of explored space. This vast region is known...

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Popular Games
Half-Life 2
Half-Life 2 First Person Shooter
Garry’s Mod 10
Garry’s Mod 10 First Person Shooter
Portal 2
Portal 2 Puzzle
Counter-Strike: Source
Counter-Strike: Source First Person Shooter
Left 4 Dead 2
Left 4 Dead 2 First Person Shooter
Portal
Portal Puzzle
Left 4 Dead
Left 4 Dead First Person Shooter
E.Y.E: Divine Cybermancy
E.Y.E: Divine Cybermancy First Person Shooter
Half-Life 2: Episode Two
Half-Life 2: Episode Two First Person Shooter
Counter-Strike: Global Offensive
Counter-Strike: Global Offensive First Person Shooter
Team Fortress 2
Team Fortress 2 First Person Shooter
Black Mesa
Black Mesa First Person Shooter
Day of Defeat: Source
Day of Defeat: Source First Person Shooter
Half-Life Deathmatch: Source
Half-Life Deathmatch: Source First Person Shooter