Games like Half-Life: Source

Half-Life 2 has sold over 4 million copies worldwide, and earned over 35 Game of the Year Awards. Episode One is the first in a series of games that reveal the aftermath of Half-Life 2 and launch a journey beyond City 17. Also features two multiplayer games. Half-Life 2 not required.

Half-Life® 2: Episode Two is the second in a trilogy of new games created by Valve that extends the award-winning and best-selling Half-Life® adventure. As Dr. Gordon Freeman, you were last seen exiting City 17 with Alyx Vance as the Citadel erupted amidst a storm of unknown proportions.

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.

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.

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 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.

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.

Relive Half-Life.

You carved your soul to shreds in servitude to a dark god, but false promises and betrayal were your only reward. Now you have a score to settle and it will be measured in blood! Experience the madness in one carnage-soaked package! All the gore, all the unholy war! Zombies, gargoyles, hellhounds and blood-crazed hordes of horrors await!

BioShock is a shooter unlike any other, loaded with unique weapons and tactics. Complete with an arsenal of revolvers, shotguns, and grenade launchers, players will be forced to genetically modify their DNA to become an even deadlier weapon.

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.

A single-player first-person sci-fi shooter/RTS hybrid unlike anything else. Fight on the front lines and command from above. Pilot your aerial grav cycle into battle while leading a squad of elite troops to ignite a revolution to reboot humanity.

Prepare for one of the most action packed-shooters in PC gaming history! Every level is full of enemies and targets for you to destroy! You will become a soldier of the alien species and protect your home world from the forces of the Human armada.

Pushing the boundaries of what fans have come to expect from the record-setting entertainment franchise, Call of Duty®: Black Ops II propels players into a near future Cold War

Prospekt begins in the Nova Prospekt prison in the Half-Life universe. Gordon Freeman is slowly being overrun by soldiers in the prison, however unknown to him, his Vortigaunt allies manage to find some help from a forgotten hero.

Immortals of Aveum is a single-player first person magic shooter that tells the story of Jak as he joins an elite order of battlemages to save a world on the edge of abyss.

Free to play shooter about the confrontation of two irreconcilable sides, represented by the government military housings and the armed hirelings. Try your hand at virtual battles with off-scale dynamics and hurricane gameplay in the spirit of the classical shooters.

Dusk 12 is a first person shooter, full of action where the player will incarnate two heroes. One of the soldiers of the group, with unknown past and one of the infected men with the virus, who has strength, speed and fortitude beyond human limits.

Quilly was abducted by aliens, now, he has to fight for his freedom! Destroy cube aliens with guns, bats and inteligence... avoid traps and more. Dead Bits is a first-person shooter with original dubstep soundtrack for Windows and Mac.

The Intelligence Agency has commissioned you, Francis Rixon, to find out what is happening inside the Corporation's confines and to retrieve information about a secret mineral upon which the very existence of the human race may depend.

Space Trader is an open world trading colony sim wrapped in a shooter. Start as a Rookie and earn your way to Master using shrewd trades, back alley deals, bribes, and well-placed bullet. Buy low, sell high and don’t take no for an answer.

NS2: Combat is a powerful twitch-shooter where space marines battle aliens through a competitive mixture of MOBA & FPS playstyles. Are you ready?

You act as a weapon genius and create ever new types of weapon with better specifications.

BLOCKADE 3D! First Person Shooter in an editable procedural cubic world. A large arsenal of weapons, 4 teams at the same time and up to 32 players on one map. A large number of game modes!

"Run and Gun" oldschool single-player platformer with NES aesthetics, including an authentic 8-bit chiptune.

In a world driven by blackmail, time is not money...crime is. Do you have what it takes to uncover the truth while staring at the business end of a gun? Dark Data is a local multiplayer FPS based on the unreleased mid-nineties film of the same name.

Head Shot is a Cartoon FPS Game. There are 5 perks of character and too many weapons ...

FreeSpace 2, the follow up to the classic Descent: FreeSpace – The Great War is ready to engage you in the second round. Follow the Grand Terran Vasudan Alliance further into the mysteries of the Shivans. Get your flight stick and hit the flight deck. The last time was just a warm up.

A common legend pervades the galaxy-that of a powerful, highly intelligent ancient race that will one day deliver the universe. They are known as Humans. The Advent of Humanity Begins...

Every day brings another mission. Every day is LIFE or DEATH. Be quick, be quiet and be careful. That’s what will get you HOME ALIVE.

Procedural cubic 3D-shooter in the best traditions of the genre. The game is a rich cocktail consisting of the most popular and functional gaming solutions. Customization of characters, opening cases and improving the existing arsenal — all this is available in the game now!

Kings and Heroes is no longer available.

APP HAS BEEN RETIRED!

Shoot zombies from terrace like a boss! Zombo Buster Rising Remastered brings you a nostalgic experience of classic 2D side shooting-defense in enhanced build right from your Steam library!

Alien robots are attacking.

You are a member of Space Station 51. When you wake up, you find that a zombie virus has broken out on the space station. You need to follow the command of the station master and take a series of actions.

A single player first-person action shooter.

The year is 2033. Your name is Tex Murphy, Private Investigator in San Francisco.

In the backyard of the civilization, left by destiny without any hope, you'll find this house on the hill. It will become your shelter and give you everything you need. But then, the owners of the hill will come. And you will pay for this shelter.

A quirky, absolutely content-packed, destructible open-world sandbox adventure with combat, platforming, character customization, and collect-a-thon scavenger hunt experience. Play solo, 2-player split screen, or online co-op for up to 4 players. No paid cosmetic DLC nonsense.

Z.I.O.N. - First-person shooter in a post-apocalyptic setting, where robotic creatures take over the planet and Z.I.O.N. group agents are trying to save the world.

The goal of the game is to survive for more than 60 seconds on each level, dodging platforms and objects, listening to bitpop soundtracks. Four levels, online-records, achievements and trading cards are waiting for you.

迷宫：消灭机器人是一个走迷宫和消灭机器人的游戏。

Livelock is a co-operative top-down shooter where you play solo or with up to two allies to break the cycle of infinite war between machines. As one of the remaining Capital Intellects, your role is to unlock Eden and revive humanity.

Kill Invaders - Dive into a thrilling multiplayer FPS with an alien storyline. Defend Earth in a battle against extraterrestrial invaders! Single Player, Multiplayer, Deathmatch and Battle Royale Modes !

A company is currently in development of robots for the new generation - Botology, conduct tests for a new system for the remote control of robots. The purpose of the company is to help future potential buyers explore the remote space systems.

Monochroma is a cinematic puzzle platformer. It’s a game about being a kid, growing up with a little brother that needs your help, facing obstacles and solving unique puzzles in a dystopian 1950's setting.

This game is for players who want to improve their shooting skills in games like Call of Duty.

Ever wanted to create your own Multiplayer FPS? Now you can!"But.. it's hard." No, it isn't, you just need motivation and some basic programming knowledge.This game is the Free-to-play Demo of what you can create by watching the Video Series "How to Create a Multiplayer FPS in Unity" available on Steam Video Platform!

Portal 2 draws from the award-winning formula of innovative gameplay, story, and music that earned the original Portal over 70 industry accolades and created a cult following. For more information on Portal 2 click here.

迷离是一款氛围感与沉浸感极强的第一人称恐怖解密射击游戏，几年前，一家人误入了一个神秘村落，几年后，这家人相继自杀。你受人委托前去调查这桩诡异迷离的凶案，在凶案地点，这里的煞气压的你喘不过气，并在深入的探索中发现了一个恐怖的真相。

A fateful meeting sets off a chain reaction, upending Mark's life. People disappear and memories prove unreliable. Uncover a hidden truth with Mark and his friends in this narrative adventure and race to unravel the mystery before it's too late.

A platform game so difficult and at the same time, so addictive that you will enjoy having to repeat a levels dozens of times until complete them.

A narcotics police officer invades a logistics company, suspected of drug trafficking. Looking for evidence, he discovers an even greater secret, and his mission now and leave the place alive. iREC presents moments of tension, with an incredible atmosphere of terror.