Games like Intruder on Steam
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Serious Sam HD: The First Encounter
Serious Sam HD: The First Encounter is a visually upgraded and fully Steam supported remake version of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS which was Gamespot's Game of the Year 2001 and which scored overall of 87% on Metacritic!
Cartoon Strike
"Different realities, different rules, but always fun". In the multiplayer game Cartoon Strike, each map offers a different gaming experience. Players can enjoy a few minutes of fighting in the WWII, followed by a few minutes in the present, future or even funny mode.
3D Aim Trainer
The #1 free aim trainer - now on Steam and SteelSeries GG. Join 13+ millions of FPS/TPS players improving flicks, tracking & reaction speed with pro drills, analytics & leaderboards. Dominate in Valorant, CS2, Apex & more. Play free and start hitting every shot. #AimToConquer
Zula Global
Zula is an intense free-to-play FPS in which you can play cooperatively with your teammates to overthrow the enemy side. You can enjoy new content weekly and receive gifts every day. Variety of maps and weapons from the real world so you can immerse yourself 100%.
Hitman: Absolution™
The original assassin is back! Betrayed by the Agency and hunted by the police, Agent 47 finds himself pursuing redemption in a corrupt and twisted world.
Drive Beyond Horizons
Rev up your engines and venture into the unknown with Drive Beyond Horizons! Conquer dynamic landscapes, customize your ride, and unearth hidden treasures. Get ready for heart-pounding challenges and endless excitement. Your adventure starts now !
Chaser
Mars, 2044. The UN establishes MARSCORP (Martian Security and Economics Committee) under the leadership of Samuel Longwood. In the years that follow, the UN gradually loses control of MARSCORP, mainly due to the non-transparent licence policy of its director.
Fast Food Simulator
Welcome to the world's most chaotic place! Play solo or co-op with up to 6 players. Run a fast-food restaurant, and work with your friends to expand your business. Take orders, make burgers, and increase your earnings by dealing with customers.
Operation: Harsh Doorstop
Operation: Harsh Doorstop is the ultimate, free to play, tactical shooter sandbox. Play singleplayer, multiplayer, or co-op modes and explore thousands of community-created maps, weapons, and vehicles via the Steam Workshop. Created by ex-developers of Squad, Red Orchestra, and Insurgency.
Zombie Carnage 2
Zombie Carnage 2 is a 32 player first person shooter where you will play both as a human and zombie. By killing zombies and infecting humans you will permanently level up, unlock weapons, attachments, zombie classes and more.
FPS Game: Dev Test
A Simple, Fun, Multiplayer FPS game, strictly built and packaged for development testing and networking development.
Bogos Binted?
Welcome to a sinful night with the galaxy’s wackiest aliens. Play twisted tabletop games with up to 4 players, devise brilliant strategies, bluff your way to victory, and try not to lose your head - literally.
Battlefield™ 6
The ultimate all-out warfare experience. In a war of tanks, fighter jets, and massive combat arsenals, your squad is the deadliest weapon.
Crookz - The Big Heist
Crookz - The Big Heist is a tactical strategy game set in the funky 1970’s with a slick and groovy atmosphere. Show off the art of thieving by plotting stylish heists and robberies; utilizing espionage and quick-thinking to avoid detection.
Grimoire: Manastorm
A free multiplayer wizard FPS which features six classes to master with thousands of possible spell loadouts. Choose your class of magic, customize your spell book with dozens of abilities, and battle against others for supremacy in FFA or Conquest, or go solo to survive against waves of the undead.
MechWarrior 5: Clans
In MECHWARRIOR 5: CLANS, players become new Smoke Jaguar pilots in the Clan Invasion of the Inner Sphere. Lead a five-mech "Star" squad across diverse planets, engaging in an expansive campaign with immersive gameplay and intricate combat. Customize BattleMechs and explore strategic options.
Viscera Cleanup Detail
In Viscera Cleanup Detail, you step into the boots of a space-station janitor tasked with cleaning up after various horrific sci-fi horror events. Instead of machineguns and plasma-rifles, your tools are a mop and bucket. That hero left a mess, and it's up to you to deal with the aftermath.
Crime Simulator: Playgrounds
Crime Simulator: Playgrounds is a short, chaotic, and hilarious entry in the Crime Simulator franchise. Throw hammers, spray pepper gas, and cause mayhem solo or with up to 4 players. Take over hideouts, complete absurd missions, and unleash destruction with the wildest weapons. No rules—just fun!
Orbital Gear
Orbital Gear is a fast paced sidescroller shooter where you utilize the gravitation of celestial objects to give you momentum through space. Arm your Mech with two of the twelve different weapons and destroy your enemies.
Quake II RTX
Quake II RTX is a cutting-edge, ray-traced reimagining of id software’s old school classic, by NVIDIA’s Lightspeed Studios. Global lighting effects, including realistic reflections, refraction, shadows, ambient occlusion and global illumination are a result of the path-traced simulation of light.
Don't Bite Me Bro! +
Don't Bite Me Bro! is a 1-4 Player Couch Co-op open-world zombie apocalypse game. Explore the world for resources, find and save survivors throughout the world, each which become playable characters with unique traits and abilities.
It Has My Face
IT HAS YOUR FACE. Now it wants your life. Hide, seek, and try to kill your clone in this deceptively simple first-person horror roguelite.
Pixel Gun 3D: PC Edition
The legendary mobile multiplayer FPS Pixel Gun 3D comes to PC! Experience an enhanced world of colorful, blocky action. Featuring dozens of game modes and maps, 1500+ guns plus cross-platform multiplayer and progression.