Top similar games like Starship Troopers: Extermination:
Starship Troopers: Extermination $49.99
Starship Troopers: Extermination is a 16-player co-op FPS that puts you on the far-off frontlines of an all-out battle against the Bugs! Squad up, grab your rifle, and do your part as an elite Deep Space Vanguard Trooper to take back planets from the Arachnid threat!
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MidairFREE
Midair is a fast-paced jetpack shooter set in a breathtaking new sci-fi universe. Use movement to your advantage, outwit your enemy from every angle, build defenses, and fully customize the way you play. Break the mold of traditional shooters and jetpack your way into a challenging new experience!

Interstellar Marines$9.99
UPDATE 28 AVAILABLE - Interstellar Marines is an immersive tactical sci-fi First Person Simulator in the making, offering a unique blend of tactical gameplay, dynamic environments and non-scripted AI. Play Singleplayer or Co-op/PvP on servers around the world.

War Dust VR: 32v32 Battlefields$24.99
Join the fight in War Dust VR, the ultimate FPS shooter with immersive VR gameplay. Dominate expansive battlefields with diverse vehicles, exciting mechanics, and strategic control points. Join your team and become a champion of this multiplayer war today!

Natural Selection 2$4.99
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!

Executive Assault 2$24.99
The RTS/FPS phenomenon has moved into space! Build your base on an asteroid, command fleets of starships for epic battles, pilot fighters, mine and trade resources, assemble robots to defend or assault other stations. Take sole command or share the glory as you fight for control of the quadrant.

Portable Ops$14.99
In POPS, every bullet fired pushes you further into the chaos of war. The story-driven campaign throws you into the boots of an elite operative. Fight through a series of intense missions, face overwhelming odds, unexpected betrayals, and brutal firefights where only the strongest survive.

Survive the Nights$19.99
Survive the Nights is a unique FPS survival game focusing on teamwork, fortification, creativity & strategy. Secure a structure or roam free, the choice is yours. Gameplay focuses on realistic survival, post zombie infestation. Prepare during the day for nightfall. How many nights will you survive?

Kronos$1.99
All units, heed my orders! The enemy is approaching! Call for reinforcements! Set up turrets! And someone bring me a new gun! And quickly! Now, all fighters, time is short, everyone to Kronos! Go, go, go!

Sanctum 2$14.99
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.

Cyborg3003$16.99
6-player co-op survival horror at its finest! Cyborg, monsters and aliens. Free updates

Deeper In The Dark$2.99
You like Sci-Fi games? You like FPS? You like games with secret items, collectables? You like short Indie games? Then you will love this game! The game takes place in a big mothership captured by aliens. Your mission is to kill all the aliens, and blow up the mothership.

Cascading Failure$19.99
Lead your troops into battle first hand in an intense Sci-Fi world. Construct bases, build defences, construct bigger bases, build way too many defences and take the map with overwhelming amounts of infantry, mechs and firepower.

Serious Sam HD: The Second Encounter$19.99
Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!

Federation Mycha$4.99
Step into a world over run with Mycha, a strange mineral with seemingly magical powers. Clear monster-infested environments and protect researchers on your own or with up to three other players online. Welcome to The Federation.

Null GFREE
Welcome to Null G space station. A competitive and adaptive environment for flexible battle training. The Battle School creates peer to peer opposition in fast-paced combat training sims and solo training against rigorously designed AI drones. Team up or fly solo to win the advantage.

Empower$17.99
Enter a physics based multiplayer PC VR Sci Fi arena sandbox that supports ranged and close combat. Switch dynamically between PC and VR mode and compete against other players and complex AI with fully physics-based weapons in different gamemodes.

Gemini: Binary ConflictFREE
‘Gemini: Binary Conflict’ is a multiplayer, class based, first person shooter set in the midst of an interplanetary war. The game features a colourful visual style, unconventional weaponry, equipment, armour, class roles and modes, to provide a subtle mix of familiar and unusual game mechanics.

Xheres$11.99
Either FPS or TPS, choose your play style and survive the apocalypse on your own or with your friends. But one must know for sure it ain't gonna be easy, there are hordes waiting for you. Not even considering tough ones... Nevertheless it's gonna be fun.

PULSAR: Lost Colony$19.99
The co-op open-world space sim where everyone has a role! Pilot the ship. Reroute power. Launch nukes. Explore alien planets. Research new talents. Work together to find the Lost Colony! ...or just deliver some biscuits

Skyfront VR$9.99
Skyfront is a fast-paced multiplayer FPS built exclusively for VR. The game launches you into mesmerising zero-G arenas. But not before equipping you with an array of awesome weapons and impressive special abilities.

SCP: 5K$19.99
SCP: 5K is a co-op or singleplayer tactical horror FPS project that puts players in the midst of a conspiracy where the SCP Foundation has turned on humanity. Enjoy Early Access as we continue to work towards a completed full release of the project!

Crunch Element$19.99
Raid destructible compounds using explosive gadgets and tactical weaponry! Hone your CQB skills in constantly changing compound layouts and blast open entry points with explosives to get the perfect shot. Team up with your squad or take on the challenge as a lone wolf!

Unsafe Express$11.99
Unsafe Express is a cooperative first-person survival horror game for 1-4 players. Navigate through space stations, collect materials and outlast your enemies! Choose your objective based on complexity levels, then cast your vote. Gather items, exterminate hostiles, fulfill missions and repeat!

BioFusionFREE
BioFusion is a VR co-op multiplayer, PvE, first-person-shooter, tower defense game. Swing on a grappling hook, ride a hovercraft, throw grenades, collect buffs, build towers and traps. Do what you must to keep the mutants from the Spores of Evolution.

Astro Hunters VR$19.99
Become one of the Hunters in Astro Hunters VR - PvPvE extraction shooter set in space. Explore a unique planet, fight with different enemies, craft, gather resources, and upgrade your weapons. But remember there are also other hunters on the planet. Will you ally, fight, or betray - it's up to you!

Grapple TournamentFREE
Grapple Tournament is a VR Grappling Hook Shooter with 3D movement freedom, fast-paced vertical combat and dual wieldable multifunctional weapons. Now Free-To-Play!

Galactic Sanctuaries$3.99
Protect the lighthouse, destroy nests and complete tasks.

141$9.99
Engage in deadly shootouts with a diverse arsenal of weaponry in this fast competitive online FPS. The objective: Get the encrypted data back to the source. Find the encrypted key and activate the data SLOT, a pyramidal dock with the power of sending the data back to ATMOS.

OPG: Clan Wars$9.99
Online multiplayer with PVPVE battles. Five game modes. Single-player, team battles, raids, global mode, and bunkers.Arena shooter, open world, quests and crafting resources await you. Join the world of OPG.

Gatekeeper$14.99
Gatekeeper is a fast-paced rogue-like. Go on a quest to find the stolen Heart of the Universe and shoot your way through the hordes of machine enemies guarding the planetary gates. Play solo or in 4 people co-op and become the next Guardian!

Moon Defence$8.99
Aiming is uneasy, movements are slow, resources are hard to earn. Stop farming infinite vegetables, try to acquire some more jigowatts in empty space, where no one can hear your scream. Moon is a harsh mistress.

Backrooms: Liminal Conflict$2.99
Backrooms: Liminal Conflict is a PvP game featuring different factions, a complex multi-layered map, and multiple paths to escape.

Vox Machinae$29.99
Strap yourself into the cockpit of a robot seven times taller than a Tyrannosaurus Rex and prepare to do battle in Vox Machinae: the ultimate giant robot combat action-simulator for both VR and standard screens.

Incursion: Reforged$4.99
Incursion is an indie FPS that aims for a unique wave survival experience with class-based combat for both co-op and singleplayer. Fight alongside strangers or friends and take advantage of unique weapon combinations, perks, and classes to win in this solo-developed indie title.

Entities$7.99
Dive into horror in Entities. Solo or up to 4-player matches offer dynamic puzzles, relentless entities, and extraction shooter mechanics. Investigate, unlock paths, and survive in dangerous zones as a private operator. Master skill and terror. Are you ready to confront the unknown?

Mesh Replica$4.99
Enter the sci-fi clash of this hide-and-seek game. Play as one of four mighty Hunters armed with high-tech gadgets to track down elusive Slugs. Or slip into the slimy skin of up to twelve Slugs, mastering sneaky and ingenious abilities, while hiding by morphing into various objects.

BeachHead$14.99
BEACHHEAD - IT'S NOT JUST A GAME, IT'S THE FUTURE OF REALITY. BeachHead 2000 changed the gaming paradigm by bringing a new gaming experience to life. 20 + years later, the original creators are doing it again. Try the new BEACHHEAD experience (VR or Desktop) and see for yourself.

HisteraFREE
Histera is a free-to-play, fast-paced multiplayer shooter where the battle is set inside a dynamic time glitching arena. Chunks of battlefield from past, present and future Eras transform in real time beneath your feet! Enter our Early Access and shape the present and future of the game!

CluckFREE
Cluck is an extremely fast-paced fps arena shooter. Spawn with only a pistol and find weapons, armor, health and powerups such as the Quack and Speed along the map. Jump pads and portals are also around the map, enabling you to get to your destination. And customize your own chicken!

Shard Games$7.99
Shard Games is a competitive sports game similar to real Olympics on Earth. However, there is one tiny, little difference: it’s fatal. To survive and win, sportsmen and sportswomen, you’ll have to kill each other in a variety of ways but mainly with explosives! What’s more spectacular than a nice explosion?

Space Survivors I: The Reckoning$2.99
Hello Space Survivors, this is little shooter game. Which is now most about shooting zombies but pvp will hopefully follow. Please also read the long description.

The Armament Project$4.99
The Armament Project is a fast paced Science Fiction First Person Shooter.

Trouble Town$9.99
Online game based on teamwork. Play with your friends and join one of the class groups to win. Recomended 4 players or more.

Not Dead Yet$8.99
Not Deat Yet is a 1-4 player co-op, fast-paced, rogue-lite FPS, with elements of deck-building and strategy that will test your skills in creating your own build while having to manage your resources and survive restless waves of zombies.

NervBox$14.99
Explore NervBox, the multiplayer VR physics sandbox where imagination is your greatest tool. Continuously evolving with new tools and community-driven features, NervBox invites you to build, break, and reshape the boundaries of virtual reality.

Pawn Planet: First SalesFREE
Manage your own pawn shop in the weird galaxy. Purchase and sell different items, attend auctions, stop thieves and keep the shop going!

Mind The AbyssFREE
Mind the Abyss is a fast-paced movement shooter that combines fourth-dimensional abilities and ever-evolving weaponry within an alien planet.

VIPERTRACEFREE
Fight for survival! Industrial waste has disturbed the dangerous Kaeru-tori's habitat, forcing them into the city. Unlock new areas, purchase weapons and upgrades to grow stronger, and fight off the horde with your friends!

We're All Going To DieFREE
Gather a squad and fight for survival in We're All Going To Die. Work together with a squad using abilities, equipment and exploring different levels to make the most of your fight against your demise, after all, you're all going to die at some point.

Ace Breakout$4.99
A top down shooter game fighting against large swarms of insects alone, or recruit friends to fight along side you! Buy and craft new equipment to help you rid the world of the swarm!

Descentium$5.99
Whilst researching the mysterious new element Descentium, A remote facility in Southeast Asia has gone radio silent. Alina, an elite operative who works for Descent Laboratories has been sent to investigate. Will Alina discover the secrets of the temple or fall into madness?