Named Game of the Year by over 50 publications, Valve's début 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.

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Half-Life: Absolute Zero

Half-Life: Absolute Zero

First Person Shooter

Tired of playing the same old Half-Life you've been playing since 1998? Ever thought the prototypes of Half-Life were interesting and/or unique? Well...

Phase Transition

Phase Transition

First Person Shooter

Phase Transition is a horror-style cooperative modefifcation for Half-Life.

Xen-Warrior

Xen-Warrior

First Person Shooter

Fight as a Xen alien grunt through the great levels of Half-Life: Chronicles: Episode One plus a Xen training course...

Half-Life Uplink Addon

Half-Life Uplink Addon

First Person Shooter

This mod will insert the Half-Life Uplink demo levels seemlessly into the full game using Lambda Reactor Core port 07 and its return.

RainFall

RainFall

First Person Shooter

A beta recreation mod that takes on a whole new atmosphere. Is your will to survive... Stronger than theirs?

Half-Life with No H.E.V Suit

Half-Life with No H.E.V Suit

First Person Shooter

Ever wanted to play as Gordon Freeman without an HEV Suit? Well now you can! Yep, you can play the entire game, from start to finish with nothing but...

Half-Rats: Parasomnia

Half-Rats: Parasomnia

First Person Shooter

Heath Games' Second installment of the Horror Mod series, "Half-Rats". Taking place in July of 1883. Soundtrack courtesy of Ague.

Mortal Kombat

Mortal Kombat

First Person Shooter

This mod aims to recreate the very popular fighting game Mortal Kombat on the Gold Source Engine.

Half-Life : Residual Life

Half-Life : Residual Life

First Person Shooter

Fight your way to the the surface as Black Mesa...

Wanted! The Western Mod - STEAM

Wanted! The Western Mod - STEAM

First Person Shooter

WantedHL - The Western Mod that was released 2001, now its converted to steam version by me! The options screen is not 100% good... but i did only convert...

HL Colonial Marines

HL Colonial Marines

First Person Shooter

New halflife singleplayer mod based on the ALIEN movie ....

DragonBall ESF: Xenoverse

DragonBall ESF: Xenoverse

Fighting

ESF:X is a personal version of Earth's Special Forces, it includes much more interesting functions than the original ESF, and it's supposed to release...

Dead Shift

Dead Shift

First Person Shooter

A new HL1 modification [just like OpFor, and Blue Shift, series based on another personnel perspective in Black Mesa.

Unity - Half-Life Co-op

Unity - Half-Life Co-op

First Person Shooter

THIS PROJECT IS NO LONGER BEING WORKED ON Sven Co-op recent steam release got rid of most the weird additions and stitches maps together for far less...

Base Defense

Base Defense

First Person Shooter

Base Defense is a single/cooperative modification based on horde-style and RPG systems. It's awesome, you should try it ;)

Half Life Hazardous Course: Update v1.1

Half Life Hazardous Course: Update v1.1

First Person Shooter

An update version of Hazardous Course v1.1 Modification mod. NOTE: THE MOD DOES NOT A DOWNLOAD, YOU NEED A ORIGINAL VERSION OF HAZARDOUS COURSE MOD! Created...

benouna

benouna

First Person Shooter

i crate this map for half life death match multiplayer online or with bots i hope you like it link

Earth's Special Forces

Earth's Special Forces

Third Person Shooter

ESF is a fast paced, 3rd person fighter based on the hit anime, Dragonball Z. Select your favorite character and fly, power up, transform, melee, and...

Source For Go-Mod 3

Source For Go-Mod 3

First Person Shooter

Source For Go-Mod 3 Are Conversion Mod Packs For Go - Mod 3.4 Or They Can Be Used In Half Life And Its Expansions These Mod Packs Contain Models And Sounds...

Half-Life: Update MOD

Half-Life: Update MOD

First Person Shooter

First simply subtitles mod, and now Update MOD that will take Half-Life into the next level.

Half Life Modding Kit

Half Life Modding Kit

First Person Shooter

Need to start some were in modding right? Why not try the Half-Life modding Kit. This Kit is designed to have all the tools you need to start your own...

Half-Rats: A Fever Dream

Half-Rats: A Fever Dream

First Person Shooter

July the fourteenth, 1883: Being rather rudely awakened after a night of drunken revelry; Half-Rats is thrust into a rather dire situation. Utter calamity...

NoPortal

NoPortal

Puzzle

The game NoPortal - in Half-Life / Portal universe, but in a different dimension where the portal technology and have not been studied, and we will solve...

Day of Defeat Singleplayer Warfare Mod

Day of Defeat Singleplayer Warfare Mod

First Person Shooter

Hey guys, sw33tsp0t here! I am honored to Introduce to you Day of Defeat Classic Singleplayer Warfare Mod. This Mod Enables Day of Defeat to Reach its...

LSD Dream Emulator

LSD Dream Emulator

Adventure

LSD Dream Emulator is a total conversion for Half-life that is meant to replicate the 1998 game by Outside Developers and Asmik ace. The game is extremely...

SHλFT

SHλFT

First Person Shooter

Shaft brings to life the original concepts from Half-Life's early years. Featuring enemies, areas, and game play features that never made it into the...

Hazard: The Plague

Hazard: The Plague

First Person Shooter

A Zombie Survival Half-Life Mod The Infected are everywhere. Everything you know has been destroyed. Friends and family are infected or missing. Do you...

Shogo: Ikari

Shogo: Ikari

First Person Shooter

On foot part of shogo mod. This time you will fight as a soldier, without giant MCA, with more traditional weapons.

Scientist Slaughterhouse 2

Scientist Slaughterhouse 2

First Person Shooter

Everyone Remembers Scientist Slaughterhouse 1, right? Well... It was very popular and it stopped being updated. So here at N!arF Studios we're going to...

Half-Life: Ghost Project

Half-Life: Ghost Project

First Person Shooter

sujeito: Roger Casali Um projetista de armas e ex-fuzileiro renomado que trabalha na instalação Black Mesa e agora tem que sobreviver a um evento chamado...