
Lost Squad — fan-made Source Engine based game in Half-Life® 2 universe about what happened to Barney Calhoun after Half-Life® 2: Episode One events and why he was not in Half-Life® 2: Episode Two
60+ similar titles based on shared tags and player behavior. Themes include Action, First-Person, Multiplayer, Co-op.

Lost Squad — fan-made Source Engine based game in Half-Life® 2 universe about what happened to Barney Calhoun after Half-Life® 2: Episode One events and why he was not in Half-Life® 2: Episode Two

Transmissions: Element 120
TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls. The story takes place at a mysterious date & location. Where are you? Why have you been sent?

Killing Floor - Toy Master
In a free, add-on mod for Killing Floor, created by David Hensley (with help from Killing Floor originator, Alex Quick), you can fight off the bizarre and warped toys of someone's nightmare, that are hell-bent on finishing you off. All the standard Zeds are replaced with evil toys, set in the Devil's Dollhouse map.
TE120 is a short single player experience set in the Half-Life Universe featuring a gravity defying weapon that allows you to jump buildings and sustain large falls. The story takes place at a mysterious date & location. Where are you? Why have you been sent?
Why similar: Mod 31.9% ★, Zombies 19.5%, FPS 11.3%, Multiplayer 7.7%, Shooter 5.8%
In a free, add-on mod for Killing Floor, created by David Hensley (with help from Killing Floor originator, Alex Quick), you can fight off the bizarre and warped toys of someone's nightmare, that are hell-bent on finishing you off. All the standard Zeds are replaced with evil toys, set in the Devil's Dollhouse map.
Why similar: Mod 29.5% ★, Zombies 18.3%, Multiplayer 10.8%, FPS 10.1%, Co-op 8.2%
Dive into the zombie apocalypse with Zombie Panic! Source: a cooperative, survival-horror first-person-shooter. A fast-paced standalone modification.
Why similar: Mod 27.1% ★, Zombies 25.9%, Multiplayer 9.8%, FPS 9%, Co-op 7%
The chances of you surviving this all out war of society and the undead are slim to none. Already, there are millions of the walking dead shambling about, searching for food to eat. There's no known cure. One bite can possibly end it all for you. However, you aren't alone in this nightmare.
Why similar: Zombies 32.6%, Multiplayer 11.7%, Mod 11.1% ★, Co-op 9.7%, FPS 9.4%
The Call of Duty: Black Ops III Multiplayer Starter Pack allows you to experience the ranked Multiplayer game mode of Black Ops III.
Why similar: Zombies 24.5%, Multiplayer 21.4%, FPS 18%, First-Person 7.3%, Shooter 6.1%
Counter-Strike Nexon 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!
Why similar: Zombies 25.2%, Mod 21.2% ★, FPS 18.7%, Co-op 9.3%, Multiplayer 8.1%
Once a prosperous city Istanbul is fallen. Prepare your gear, defeat zombie hordes and reclaim your hometown. Uncover hidden story behind the disaster and learn what controls the zombies. Select your side between military and rebels and fight for the control of the city.
Why similar: Zombies 26.7%, FPS 14%, Multiplayer 13.6%, Survival 10.9%, Co-op 9.8%
KILLGUN - is a ruthless FPS for players who crave pure, aggressive combat, high difficulty, and an atmosphere of constant survival.
Why similar: Zombies 32.9%, FPS 22.2%, Co-op 10.4%, Multiplayer 6.5%, Action 6.2%
Deadfall Adventures is an action-driven first-person shooter, spiced up with elements from action-adventure games. Become an adventurer, hunt for treasures, explore unknown regions of the world and rescue the damsel in distress from the clutches of enemies, both earthly and not-so-earthly.
Why similar: FPS 27.3%, Zombies 14%, Multiplayer 12.1%, Action 9.8%, Adventure 9.7%
Dead Effect 2 is the newest addition to the acclaimed Dead Effect franchise. This action sci-fi shooter is looking to push the boundaries of first-person shooters to new levels with slick graphics, rich narrative and RPG elements.
Why similar: Zombies 26.8%, FPS 18.8%, Co-op 15.1%, Multiplayer 9.3%, Survival 7.2%
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.
Why similar: Zombies 37.5%, FPS 15.2%, Co-op 14.4%, Multiplayer 10.9%, Shooter 4.1%
Welcome to the zombie apocalypse experience of a lifetime – and now more beautiful than ever. Caught in the midst of an epic zombie outbreak on the tropical island of Banoi, your only thought is: Survive!
Why similar: Zombies 33.8%, Co-op 13.9%, Multiplayer 11.6%, Open World 9.3%, FPS 8.8%
Set in the zombie apocalypse, Left 4 Dead 2 is a 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 across five expansive campaigns.
Why similar: Zombies 42.8%, FPS 14.9%, Co-op 13.6%, Multiplayer 9.6%, Shooter 4.1%
Call of Duty®: Black Ops III Zombies Chronicles Edition includes the full base game plus the Zombies Chronicles content expansion.
Why similar: Zombies 26%, FPS 18.9%, Multiplayer 18.9%, Co-op 10.3%, First-Person 6.5%
You decide the combat role you want to assume in the world of Brink as you fight to save yourself and mankind’s last refuge!
Why similar: Parkour 30.9%, FPS 25.4%, Multiplayer 13.2%, Co-op 8.1%, Action 5.9%
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.
Why similar: Mod 51.9% ★, FPS 21.8%, Action 9.2%, First-Person 6.6%, Shooter 5.6%
Welcome to the zombie apocalypse experience of a lifetime – more beautiful than ever. Caught in an epic zombie outbreak on the tropical island of Banoi, your only thought is: Survive!
Why similar: Zombies 32.9%, Co-op 15.7%, Multiplayer 13%, Open World 9.3%, Survival 6.6%
Humanity is fighting a losing battle against the virus. Experience a post-apocalyptic open world overrun by hordes of zombies, where your parkour and combat skills are key to survival. Traverse the City freely during the day, but watch the monsters take over during the night.
Why similar: Parkour 25.6%, Zombies 21.5%, Co-op 12.8%, Multiplayer 9.8%, Open World 8.9%
Fight for your life in the INDIE SCI-FI FPS game fit for both casual and hard-core gamers with a passion for hunting down hordes of zombies. Prepare yourselves for the incoming nightmare!
Why similar: Zombies 34.5%, FPS 24%, Multiplayer 9.2%, Action 7%, Shooter 5.7%
Grab a weapon, demolish your enemies, level up, become more powerful, let the gore flow, let the limbs fly. BrainBread 2 introduces a zombie fps mixed with RPG / Arcade elements, the game is very action-packed and generally fast-paced.
Why similar: Zombies 31%, FPS 16.6%, Multiplayer 15%, Co-op 10.9%, Survival 7.6%
6-player co-op survival horror at its finest! Free updates, free special events and a ridiculous amount of fun!
Why similar: Zombies 29%, FPS 21.8%, Co-op 16.1%, Multiplayer 9.3%, Survival 7.4%
Double Action is a free stylish multiplayer game about diving, flipping, and sliding your way into action movie mayhem.
Why similar: Parkour 31.5%, Multiplayer 16.2%, FPS 13.7%, Shooter 7.4%, Action 7.4%
Back 4 Blood is a thrilling cooperative first-person shooter from the creators of the critically acclaimed Left 4 Dead franchise. Experience the intense 4 player co-op narrative campaign, competitive multiplayer as human or Ridden, and frenetic gameplay that keeps you in the action.
Why similar: Zombies 31.8%, FPS 16%, Multiplayer 12.5%, Co-op 11.4%, Shooter 6.1%
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.
Why similar: FPS 31.1%, Multiplayer 19.5%, Shooter 10.7%, Zombies 10%, First-Person 8.4%
After being captured by EGG CORP for failing to comply with them, it’s now your mission to escape their facility. Run, jump, and fight your way out in this fast-paced 3D platformer heavily inspired by KARLSON
Why similar: Parkour 36.4%, FPS 25.4%, Action 14.2%, Multiplayer 11.5%, Shooter 11.2%
The New Z is a FREE TO PLAY multi-game mode experience. SURVIVE with friends and gather loot, stash and trade. Go into wars against other groups in a massive OPEN WORLD or face them 5 v 5 in COMPETITIVE.
Why similar: Zombies 38.3%, Multiplayer 14%, FPS 11.2%, Survival 10.8%, Open World 10.8%
After sending several probes to a certain planet, all contact was lost, so an exploration team was sent to investigate, but they fell into an unknown struggle.
Why similar: Zombies 28.3%, FPS 22%, Multiplayer 13.7%, Co-op 10%, Shooter 7.5%
GAG is a new way to talk about games. Episode No. 2: A jump scare as the foundation of horror; Episode No. 1: Dying Light and freedom.
Why similar: Parkour 29.2%, Zombies 23.9%, FPS 11.9%, Open World 9.6%, First-Person 7.8%
The biggest first-person action series of all time and the follow-up to critically acclaimed Call of Duty®: Modern Warfare 2 returns with Call of Duty®: Black Ops.
Why similar: Zombies 30.1%, FPS 23.5%, Multiplayer 14.1%, Action 8.7%, Co-op 6.8%
Source movement speedrunning at its finest. Momentum Mod centralizes and improves upon various community movement game types from various Source games. Play user-created maps, climb the ranked leaderboards, and become a master of each movement discipline.
Why similar: Mod 43.3% ★, Parkour 25%, FPS 10%, Multiplayer 8.2%, Action 7.8%
A round-based zombie survival game. Purchase weapons, power-ups, and other items to survive.
Why similar: Zombies 23%, FPS 16.9%, Action 12.8%, Co-op 12.4%, Adventure 11%
L.O.S.T. is a 4-player co-op survival game. Work together, scavenge resources, and do whatever it takes to escape before it’s too late.
Why similar: Zombies 27.7%, FPS 17.8%, Co-op 13.3%, Survival 10.7%, First-Person 8.7%
Join the corps! Umbrella Corps brings a competitive experience featuring new types of strategy and technique blended with elements from the world of Resident Evil, to create a unique kind of shooter!
Why similar: Zombies 35.1%, Multiplayer 15%, Co-op 13.5%, Action 9.6%, FPS 8.6%
Survive the living dead for as long as you are able! Room Invaderz is a wave-based survival game where you and your comrades kill zombies, earn points, and do your best to upgrade your arsenal to see how long you can delay the inevitable.
Why similar: Zombies 23.9%, FPS 19.7%, Co-op 10.8%, Multiplayer 8.9%, Survival 8.4%
Lights. Camera. Action!
London is falling. Are you prepared? The Last Blight is upon us. It was foretold. For the second time in history, a great plague has shrouded London in a fog of death. Big Ben tolls as thousands of unprepared die, or worse, are infected by a sickness more gruesome than death.
Why similar: Zombies 43.6%, Survival 9.5%, Multiplayer 8.6%, Open World 7.7%, First-Person 7.4%
Relive Half-Life.
Why similar: FPS 23.8%, Mod 17.9% ★, Zombies 17.4%, First-Person 8%, Multiplayer 7.5%
Cross-platform hurricane online 3D Shooter
Why similar: FPS 31.4%, Multiplayer 21.7%, Shooter 10.5%, Action 9.7%, Parkour 8.8%
CRAZLIPSE is a game where officer Stefan Vincenzo uncovers a zombie apocalypse at the "Starry Sky Tree." After meeting scientist Matheus, he’s teleported to a zombie-infested zone to survive and fight.
Why similar: Zombies 41%, FPS 22.2%, Action 11.5%, Shooter 9.5%, Open World 8%
BlackShot is a free-to-play, first-person shooter set in a post-apocalyptic world.Join other mercenaries in brutal team combat, multiple game modes, and experience in-depth customization to create your perfect warrior!
Why similar: FPS 35.5%, Multiplayer 17.6%, Zombies 11.7%, Shooter 10.9%, Action 9.3%
BIOS is a fast paced, high octane asynchronous First Person Shooter (FPS) competitive game. The player needs to complete the different simulated hostile environment the fastest way possible. Players develop strategies and refine their skills to make better times and compete in the leaderboards.
Why similar: Zombies 25.9%, FPS 19.9%, Shooter 13.7%, Co-op 11.7%, Action 11.4%
Codename CURE is a first person, co-operative zombie game with support for up to five players, providing dynamic, fast-paced zombie fragging with both objective, and survival-based missions.
Why similar: Mod 29% ★, Zombies 22.8%, FPS 12.3%, Co-op 9.9%, Multiplayer 7.6%
Dystopia is a cyberpunk game with tense combat situations in a high-tech world spanned by computer networks. Playing as either Punk mercenaries, or Corporate security forces, the player will fight through the physical world to gain access, via jack-in terminals, to cyberspace.
Why similar: Mod 51% ★, FPS 15.3%, Multiplayer 12.6%, Action 5.2%, Co-op 4.3%
WASTED Bloodline is a first-person shooter with stunning graphics, singleplayer botmatch mode, online multiplayer, and cooperative play, featuring long-term support.
Why similar: FPS 26.1%, Co-op 17.3%, Multiplayer 15.6%, Zombies 12.6%, Shooter 7.2%
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!
Why similar: Zombies 24.2%, FPS 22.4%, Multiplayer 16.7%, Shooter 10.5%, Co-op 7.3%
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
Why similar: FPS 29.5%, Multiplayer 22%, Co-op 12.3%, Action 9.4%, Shooter 8.2%
A high‑octane multiplayer shooter built for players who want speed, strategy, and seamless cross‑platform action. Alvo delivers fast, addictive VR firefights with tight controls, competitive modes, and intense close‑quarters combat that keeps you jumping back in.
Why similar: Zombies 24.2%, Parkour 21.8%, FPS 18.3%, Multiplayer 11.3%, Co-op 9.3%
They Are Hundreds is an evolving Third-person wave based zombie game, co-op with up to 4 friends with endless ammo and guns!
Why similar: Zombies 27.5%, Multiplayer 15.5%, Co-op 15.1%, Open World 10.7%, Survival 10.7%
Hidden in the towering Himalayas lies Kyrat, a country steeped in tradition and violence. You are Ajay Ghale. Traveling to Kyrat to fulfill your mother’s dying wish, you find yourself caught up in a civil war to overthrow the oppressive regime of dictator Pagan Min.
Why similar: FPS 21.3%, Open World 16.4%, Co-op 15.2%, Multiplayer 12.1%, First-Person 7.3%
GunKour is a fast paced, multiplayer FPS. Use Guns, Parkour and abilities to defeat your enemies.
Why similar: Parkour 34.9%, FPS 24.9%, Multiplayer 15.2%, Action 11.8%, Shooter 7.4%
This is a survival-focused game currently in an early stage of development. The project is primarily developed as a personal work, showcasing core gameplay systems and iterative progress. Content and features are subject to change and may be expanded over time.
Why similar: FPS 31.1%, Zombies 28%, First-Person 11.3%, Shooter 10.5%, Survival 7.6%
ITERRIA ZONE - Horde destroying game. First-person Shooter, Survival, Horror
Why similar: Zombies 35.2%, FPS 29.4%, Action 10.3%, Survival 9.9%, Shooter 7.8%
Fight your way through hordes of mutants and arm yourself with powerful weapons. Monster mayhem!
Why similar: Zombies 30.6%, FPS 26.9%, Action 14.3%, Shooter 11.5%, First-Person 11.3%