- #1 Warped Universe
96% matchMostly Positive76% of 123 reviews2026
Dev: Warped Games
Windows
A free-to-play sci-fi PvE looter shooter set in a volatile and expanding universe where every mission drives progress forward for the player and community together. Choose to play any mission in real-time action or turn-based tactics, and help to eradicate the Void.
Why similar: Strategy 18.7%, Third-Person Shooter 18.7%, Action 13.3%, Space 11.8%, Multiplayer 11.5%
- #2 Aerial Guardian
96% matchMostly Negative28% of 87 reviews2018
Dev: Maddnuss GamesPub: Matthew Nuss
Windows
Aerial Guardian is a large scale multiplayer battle first person shooter. Choose from several classes and play as a soldier to embroil yourself in a space fleet battle. Choose from a variety of over 20 weapons and several vehicles including mechs.
Why similar: Strategy 47.9%, Action 31.8%, Indie 20.3%
- #3 Codename: Rogue Fleet
95% matchMixed59% of 318 reviews2016
Dev: SionoiS
Windows
Median: 36 minMean: 8.9 hrs≥1hr: 38%
Codename: Rogue Fleet is a multiplayer team-based game about spaceships combat.
Why similar: Action 32.2%, Space 24.4%, Multiplayer 22.4%, Indie 17.4%, Open World 3.5%
- #4 Gangs of Space
94% matchMostly Positive76% of 431 reviews2017
Dev: Little Big MMO
Windows · Mac · Linux
Median: 1.1 hrsMean: 290.2 hrs≥1hr: 53%
Gangs of Space is a massively-multiplayer Rogue Shmup where Gangs of players compete for the conquest of the galaxy.
Why similar: Action 37.6%, Space 28.5%, Indie 19.8%, Sci-fi 14.1%
- #5 4X-Galaxy 无主之地:银河
93% matchMixed51% of 255 reviews2018
Dev: Mercator
Windows
“4X-Galaxy” is a game developed by the 4X concept system(eXplore、eXpand、eXploit、eXterminate)
Why similar: Strategy 40.9%, Adventure 23%, Indie 17%, Space 16.3%, Open World 2.8%
- #6 Murnatan
92% matchMixed63% of 118 reviews2018
Dev: AAAGAMES
Windows · Linux
Humans VS Aliens FPS shooter combined with RTS.
Why similar: Action 57.7%, Indie 32.8%, FPS 9.5%
- #7 Space Wars: Interstellar Empires
91% matchMixed65% of 245 reviews2017
Dev: Desert Owl Games LLCPub: ToHeroes Game Studios LLC
Windows · Mac
Median: 1.3 hrsMean: 17.8 hrs≥1hr: 55%
Helm your own ship, battle for supremacy in a multi-faction war, and conquer the cosmos in this science fiction turn-based strategy game. Select from more than 100+ diverse star ships and fight for territory across a 2D hex-based grid.
Why similar: Strategy 83.8%, Indie 16.2%
- #8 WARMODE
89% matchMixed62% of 16,454 reviews2019
Dev: Novalink
Windows
Median: 54 minMean: 20.8 hrs≥1hr: 48%
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: Multiplayer 27.5%, Shooter 25.4%, Action 22.8%, FPS 13.6%, First-Person 7.1%
- #9 Galaxy Control: 3D Strategy
89% matchMixed59% of 549 reviews2016
Dev: FX Games Media
Windows · Mac
Median: 1.1 hrsMean: 28.7 hrs≥1hr: 51%
Build your base and battle with other players to control the galaxy! Galaxy Control is an ultimate space combat strategy game with fast-paced combats! Gather minerals and extract uranium, defend your base with laser towers, missile turrets, cannons, walls and mines.
Why similar: Strategy 65.7%, Space 20.8%, Action 13.5%
- #10 The Outer Rim: Survivor
88% matchMostly Positive74% of 69 reviews2018
Dev: Katoa Games
Windows
Welcome to The Outer Rim, where fast paced action and space combat meet. The Outer Rim: Survivor missions are free to download and play...Pure Action, Pure Mayhem - How long can you last?
Why similar: Action 47.1%, Indie 27.6%, Space 25.3%
- #11 MadGuns
87% matchMixed59% of 456 reviews2020
Dev: Novalink
Windows
Median: 30 minMean: 15.1 hrs≥1hr: 31%
Multiplayer free-to-play first-person shooter. Crazy weapons, battle strategy, dynamic gameplay. Win the battle for territory with your team.
Why similar: Action 40.5%, Shooter 22.6%, Multiplayer 19.1%, FPS 8.9%, Indie 8.8%
- #12 BLACK ACE
86% matchMixed46% of 84 reviews2022
Dev: Tuning Mania
Windows
Competitive multiplayer match with vehicles and arcade elements that makes the gameplay unpredictable. Select and customize your operators and your weapons. Choose a strategy to win in a open map. Became a master of all game modes. Create your clan and level up until the BLACK ACE level!
Why similar: Third-Person Shooter 26.4%, Action 18.4%, Multiplayer 17%, Shooter 16.3%, FPS 7.9%
- #13 Second Galaxy
86% matchMixed52% of 1,204 reviews2019
Dev: Zilong Game Limited
Windows
Median: 42 minMean: 9.4 hrs≥1hr: 38%
Second Galaxy is an open world sci-fi game that combines RPG and SLG elements. You can navigate hundreds of different space ships, team up with players to form alliances, and engage in intergalactic battles with other players around the world.
Why similar: Strategy 47.5%, Space 31.1%, Sci-fi 14.7%, Open World 6.6%
- #14 Iron Armada
82% matchMostly Positive77% of 177 reviews2024
Dev: Bluedrake42Pub: Drakeling Labs
Windows
Median: 1.4 hrsMean: 833.3 hrs≥1hr: 53%
Iron Armada is a multiplayer, space-faring combat game where players must team up to build a fleet of ships in order to survive the perils of space and defeat the opposing player faction. Build ships of all shapes and sizes, mine resources, and scavenge parts with friends to conquer the universe!
Why similar: Strategy 49.7%, Action 34.3%, Space 5.3%, Adventure 4.5%, Multiplayer 3.2%
- #15 Spacelords
84% matchMixed53% of 3,277 reviews2017
Dev: MercurySteamPub: Mercury Steam Entertainment s.l.
Windows
Median: 1.2 hrsMean: 8.5 hrs≥1hr: 53%
Embark on an epic sci-fi, free-to-play adventure. Spacelords is a brand-new take on the shooter genre. Through its 4 vs 1 campaign, you experience both sides of the story: Join the Raiders in their fight to free the legendary Broken Planet, or switch sides and fight as the Antagonist alongside the invading hordes!
Why similar: Action 34.9%, Third-Person Shooter 13.2%, Strategy 13.1%, Multiplayer 10.6%, Adventure 9.9%
- #16 Shattered Void
81% matchMostly Positive73% of 95 reviews2024
Dev: yyy1505yyy
Windows · Linux
Space MMORPG where players can fly on different ships, collecting devices, subsystems and navigations or finding new weapons that will serve in battles. Take part in battles, explore the world, mine ore, trade, fight and build your own clan with a station.
Why similar: Space 31.1%, Action 26.5%, Indie 22.8%, Sci-fi 18%, Singleplayer 1.6%
- #17 Bean Battle Brawl
78% matchVery Positive83% of 54 reviews2024
Dev: Sb
Windows
A simple, early beta 3D multiplayer fps!
Why similar: Action 28.8%, Multiplayer 26.7%, Shooter 19.5%, FPS 10.7%, Indie 8.2%
- #18 Backyard Brawl
81% matchMixed67% of 72 reviews2018
Dev: Fullbrik Games
Windows
Welcome to Backyard Brawl! A third person laser tag game.
Why similar: Third-Person Shooter 34.2%, Multiplayer 26.3%, Indie 20.5%, Shooter 18.9%
- #19 Aetherspace
79% matchMixed63% of 84 reviews2017
Dev: Munchkin's Lair
Windows
Aetherspace is a game about turn-based battles between outlaw gangs. In space. With starships.
Why similar: Strategy 70.2%, Indie 29.8%
- #20 Battle Arena
79% matchMixed64% of 58 reviews2019
Dev: ShadowWolf Games
Windows
Battle Arena is a multiplayer, immersive 2D Sci-Fi shooter! Plunge into the world of space battles and be the first!
Why similar: Action 100%
- #21 New Warfare
76% matchMostly Positive74% of 90 reviews2024
Dev: WaveRise Studios
Windows
New Warfare is a modern/sci-fi competitive stylised multiplayer first person shooter with multiple game modes. Use extremely fast arcade movements to annihilate your enemies !
Why similar: Action 28%, Multiplayer 23%, Shooter 21.8%, FPS 11.2%, First-Person 9.4%
- #22 Open Mod 2025
75% matchMixed66% of 983 reviews2023
Dev: Hyper Gamey
Windows
Open Mod is an entirely free to play, niche, tactical, extreme hardcore first person shooter with immersive aspects that may not have been seen before.
Why similar: Action 29.6%, Multiplayer 27.4%, Shooter 21.7%, First-Person 10.9%, FPS 10.4%
- #23 PHANTOM GALAXIES™
76% matchMostly Negative40% of 741 reviews2023
Dev: Blowfish Studios
Windows
PHANTOM GALAXIES™ is an epic sci-fi adventure with thrilling mecha combat. Choose between four distinct Starfighter classes and diverse weapons and gear. Once enemies, the intergalactic empires of humanity band together to battle lawless pirate factions amid war torn space!
Why similar: Action 22.7%, Adventure 17.9%, Space 14.9%, Shooter 12.8%, Multiplayer 11.7%
- #24 Arena
77% matchMixed70% of 56 reviews2019
Dev: FX GAMES
Windows · Mac
Enter the Arena! From the creators of Galaxy Control comes a real-time multiplayer game starring the space stations assault and defence, your favorite Galay Control characters and much, much more.
Why similar: Strategy 72.2%, Indie 27.8%
- #25 Rogue Heist
77% matchMostly Negative34% of 393 reviews2019
Dev: Lifelike StudiosPub: Time2Play Gaming Studios
Windows
Rogue Heist is a fresh take on Heist; what happens when both the sides are eyeing the same prize. A 6v6 multiplayer game where are you are sent in with your team to steal and outrun an opponent at the same time.
Why similar: Action 27.8%, Third-Person Shooter 23.9%, Multiplayer 19%, Shooter 16%, Indie 13.3%
- #26 Outerstellar
73% matchMostly Positive72% of 175 reviews2023
Dev: Strange Horizons Ltd
Windows
Stranded on a hostile and deadly planet, you must gather resources, build shelter, and fight to survive each night. But the secrets of this world await in a gripping sci-fi survival PvP game.
Why similar: Third-Person Shooter 19.7%, Multiplayer 16.8%, Action 15.1%, Shooter 14%, Space 13.6%
- #27 Deuterium Wars
74% matchMostly Positive78% of 602 reviews2019
Dev: Disquire
Windows
Deuterium Wars is a rapid 2D shooter. Create your own aircraft and plunge into heated battle with other players. What awaits you: an extensive role-playing system, craft, trading, and much more on a single server for all platforms.
Why similar: Action 37.6%, Multiplayer 27.4%, Indie 16%, Shooter 15.4%, Open World 3.6%
- #28 BattleRush
74% matchMixed69% of 2,878 reviews2018
Dev: TB Games
Windows
Median: 36 minMean: 5.6 hrs≥1hr: 37%
Free-to-play multiplayer action game in the entourage of the Second World War with total destructibility of the environment. Enjoy full freedom, build a defense, create your army, crush the enemy.
Why similar: Multiplayer 22.4%, Action 21.6%, Shooter 16%, Adventure 12.8%, FPS 10%
- #29 Sub Rosa
72% matchMixed69% of 3,390 reviews2021
Dev: Cryptic SeaPub: Devolver Digital
Windows · Linux
Median: 4.3 hrsMean: 27.1 hrs≥1hr: 80%
Sub Rosa is a multiplayer first-person shooter about tense deals, double-crosses, and the occasional high-speed car chase.
Why similar: Multiplayer 24.5%, Action 22.3%, Shooter 18.4%, Indie 10.6%, FPS 9.9%
- #30 Nova Empire
73% matchMixed53% of 297 reviews2022
Dev: Gamebear Tech
Windows
Median: 1.6 hrsMean: 11.6 hrs≥1hr: 56%
Build up a Space Empire and establish control of the Galaxy and the Universe! Nova Empire is a multiplayer space game in which the aim is to build your empire and conquer the galaxy in epic space battles against your rivals with other allies worldwide!
Why similar: Strategy 59.2%, Sci-fi 24.8%, Space 10.7%, Open World 5.3%
- #31 Relentless Expanse
70% matchVery Positive90% of 110 reviews2025
Dev: Cowmera Games
Windows
Capture and upgrade planets, outsmart your enemies, and conquer the galaxy! Simple yet addicting, you can play alone or outsmart your friends in this 2D top-down space RTS. Completely free, no monetization, just fun!
Why similar: Strategy 41.3%, Multiplayer 21.3%, Space 20.4%, Sci-fi 16.7%, Singleplayer 0.4%
- #32 Shot In The Dark
75% matchMixed47% of 177 reviews2015
Dev: Technomancy Studios
Windows
Median: 4.4 hrsMean: 6.0 hrs≥1hr: 95%
Shot in the Dark is a multiplayer arena FPS that takes place in a dystopian future where multiple factions have sent their agents to kill for sensitive government information. You take control of one of these agents in an attempt to survive this low-light arena skirmish... in the dark.
Why similar: Action 50.8%, Indie 34.9%, FPS 14.2%
- #33 Unearned Bounty
73% matchMixed68% of 325 reviews2018
Dev: Extrokold Games
Windows · Mac · Linux
Median: 18 minMean: 180.6 hrs≥1hr: 23%
Unearned Bounty is an action-packed Free-For-All multiplayer game where you battle to become the most infamous pirate!
Why similar: Multiplayer 27.3%, Action 24.6%, Third-Person Shooter 16.5%, Indie 14.5%, Shooter 13%
- #34 TrenchesWIP
71% matchMostly Positive73% of 1,627 reviews2019
Dev: Big OOF Games PTY LTDPub: -
Windows
Multiplayer combined-arms first-person shooter set in an alternate history. Build and upgrade bases, harvest resources, construct defenses, purchase weapons and vehicles to overcome the enemy!
Why similar: Action 38%, Multiplayer 29.2%, Shooter 11.8%, FPS 9%, First-Person 7.5%
- #35 StarMade
72% matchMixed68% of 2,991 reviews2014
Dev: Schine GmbH
Windows · Mac · Linux
Median: 1.3 hrsMean: 18.8 hrs≥1hr: 54%
The ultimate space sandbox. Participate in epic fleet battles, form alliances, strive to dominate entire galaxies and harness the universe’s resources for your industrious empire or the destruction of others. Customise your experience, the universe is yours!
Why similar: Space 25.5%, Multiplayer 15.3%, Strategy 13.8%, Action 11%, Adventure 11%
- #36 Project Entropy
69% matchMixed53% of 258 reviews2024
Dev: FunPlus International AG
Windows
Welcome, commander, to Project Entropy- an ultimate Sci-Fi and role-playing game with battles in space. In this immersive MMO experience, you will command alien civilizations, conquer uncharted planets, and build Hero fleets.
Why similar: Strategy 59%, Sci-fi 27.2%, Multiplayer 13.8%
- #37 Procelio
65% matchVery Positive87% of 182 reviews2026
Dev: Ironshell Studios
Windows · Linux
Procelio is a multiplayer vehicle builder/shooter set amidst a proxy war on the red planet. Build and refine your custom machines from orbit, then pilot them in a distant war against CPU and enemy players.
Why similar: Third-Person Shooter 24.6%, Action 24%, Multiplayer 21.1%, Shooter 14.8%, Space 11.3%
- #38 Galaxy Admirals
70% matchVery Positive86% of 331 reviews2017
Dev: Jetdogs Studios
Windows · Mac · Linux
Median: 4.5 hrsMean: 7.7 hrs≥1hr: 96%
Galaxy Admirals is a multiplayer turn-based cosmic strategy with pretty innovative and challenging gameplay. Improve your command skills with AI and conquer the whole universe by fighting with real players.
Why similar: Strategy 74.8%, Space 8.7%, Multiplayer 6.8%, Sci-fi 5%, Adventure 4.7%
- #39 Fractal Fury
69% matchMostly Positive72% of 149 reviews2021
Dev: Alex
Windows
Fractal Fury is the first online shooter with strategic dismemberment. Free to play for up to 16 players online or locally.
Why similar: Action 33.1%, Third-Person Shooter 25.5%, Shooter 17.3%, Multiplayer 11.9%, Indie 6.5%
- #40 Subspace Discovery
67% matchMostly Positive75% of 143 reviews2023
Dev: FLICK Comp GmbH
Windows
Fly through Subspace, build your own ship, and engage in epic battles. Mine asteroids and research new technologies. Uncover the origins of the alien homeworld by solving weekly events in this Co-op PvE MMO.
Why similar: Strategy 32.6%, Space 30%, Sci-fi 19.1%, Action 18.3%
- #41 CrossPlanet Beta
65% matchMixed65% of 51 reviews2025
Dev: CrossPlanet Team
Windows
A fast-paced, third-person arena shooter which focuses on movement and skill-based comabt. Outmaneuver and out-gun enemies to win, with mechanics such as double jumping, evading, grapple hook and jetpacks. No paywalls, no microtransactions, just fun, and it's free!
Why similar: Third-Person Shooter 27.7%, Multiplayer 17.4%, Shooter 15.6%, Action 13.3%, Sci-fi 10.8%
- #42 Starion Tactics
71% matchMostly Negative40% of 178 reviews2014
Dev: Corncrow Games
Windows
Median: 5.5 hrsMean: 6.3 hrs≥1hr: 97%
After assuming command of one of four human or alien factions vying for galactic dominance, immediately define your game’s scope. Play for minutes to hours across tens to hundreds of planets in single-player skirmish or multiplayer modes—it’s entirely up to you.
Why similar: Strategy 49.7%, Action 24.4%, Indie 14.3%, Space 11.6%
- #43 War Builder League
68% matchMixed58% of 174 reviews2019
Dev: The Cyber Prophet
Windows
“Build and Fight” multiplayer for mature players. Build your own Machine, join combat and win the battle using tactics and strategy.
Why similar: Action 26.7%, Third-Person Shooter 17.9%, Strategy 16.4%, Indie 15.5%, Multiplayer 12.2%
- #44 War Trigger 3
68% matchMixed60% of 8,191 reviews2015
Dev: Rocketeer Games Studio, LLC
Windows · Mac
Median: 42 minMean: 4.6 hrs≥1hr: 42%
Destroy, smash and blast your way to victory! Use advanced weapons and vehicles to dominate the battlefield.
Why similar: Shooter 27.4%, Action 18.6%, Multiplayer 17.9%, Third-Person Shooter 12.3%, FPS 8.2%