- #1 We Need More Humans!
96% matchMostly Positive73% of 158 reviews2026
Dev: Seafront Games
Windows
A short incremental game about abducting humans with a UFO! Travel around the world, unlocking upgrades, abducting humans until there is no one left.
Why similar: Aliens 49.4%, Indie 29.3%, Resource Management 21.2%
- #2 ProtoGalaxy
97% matchMixed59% of 71 reviews2010
Dev: Source Studio Ltd.
Windows
Median: 12 minMean: 4.7 hrs≥1hr: 25%
Earth is under siege! A mysterious and powerful alien race has come to enslave the entire galaxy, and your fleet is humanity's last hope. You must put an end to the attacks and rebuild a home for the survivors.
Why similar: Action 56.2%, Indie 43.8%
- #3 Abduction Action! Plus
96% matchMixed52% of 66 reviews2015
Dev: Fun Infused Games
Windows
Median: 54 minMean: 4.1 hrs≥1hr: 44%
Terrorize humanity with your UFO because you're an alien and what else are you going to do?
Why similar: Action 44.1%, Indie 30.3%, Aliens 25.6%
- #4 Galactic Missile Defense
95% matchMixed58% of 59 reviews2017
Dev: Black Sheep Games
Windows · Mac · Linux
Median: 3.8 hrsMean: 5.2 hrs≥1hr: 94%
Galactic Missile Defense is a shooter and tower defense game, where you must protect Earth from the invading Martians that declared war on our planet just because a space rover accidentally ruined their picnic!
Why similar: Aliens 44%, Action 23.3%, Resource Management 18.5%, Indie 14.1%
- #5 SQUIDS FROM SPACE
94% matchVery Positive86% of 238 reviews2017
Dev: Fun Bits
Windows
Median: 48 minMean: 3.8 hrs≥1hr: 44%
SQUIDS FROM SPACE is an 8v8, team-based PvP top-down shooter where humans and the sinister Squid aliens wage war for the future of the Earth!
Why similar: Action 37.8%, Aliens 19.3%, Indie 18%, Space 13.5%, Resource Management 11.3%
- #6 Under Domain - Alien Invasion Simulator
94% matchMixed44% of 84 reviews2020
Dev: Playlearn
Windows
Under Domain - Alien Invasion Simulator will surprise you with a Sci-fi turn-based game completely different from others. How about turning yourself into an Alien and planning an invasion to Planet Earth? You can secretly influence human history and build war machines to exterminate human beings.
Why similar: Aliens 41.1%, Resource Management 24.8%, Space 23.8%, Indie 10.3%
- #7 Exodemic
91% matchVery Positive94% of 50 reviews2022
Dev: ganashaw
Windows
Destroy aliens, dash between planets, and buy powerful upgrades. Exodemic is a compact roguelike that combines frenetic shoot 'em up gameplay with a procedurally generated overworld filled with vendors, trading hubs, and combat encounters. Race against the clock to save the human race.
Why similar: Action 44.7%, Aliens 22.9%, Space 18.8%, Indie 13.6%
- #8 Project Tarvotan
93% matchMixed58% of 76 reviews2015
Dev: FlagmanJeremy
Windows · Mac
Median: 3.3 hrsMean: 5.5 hrs≥1hr: 84%
Project Tarvotan allows you to explore the depths of the Milky Way and local universe. Use your wit and resources at hand to plan out your path through each sector. Your demise lurks around every decision. Can you survive long enough and restore balance to the universe?
Why similar: Indie 50.2%, Space 49.8%
- #9 IFO
91% matchVery Positive85% of 113 reviews2022
Dev: Lucas Le Slo
Windows · Mac
A spaceship simulator for aliens, an ever-changing rule discovery puzzle for humans.
Why similar: Aliens 56.1%, Space 23.6%, Indie 20.4%
- #10 Spaceguy
92% matchMixed52% of 126 reviews2018
Dev: Light SoftPub: Conglomerate 5
Windows
Median: 6 minMean: 5.0 hrs≥1hr: 24%
Humanity is under threat. Unknown creatures captured a space ship that moves directly to the ground. Far future. People have already mastered the flights between planets. And everything seemed to go well, until mankind met another ratio. Can you stop the alien invaders?
Why similar: Action 59.2%, Indie 40.8%
- #11 GalaxIverse
90% matchMostly Positive74% of 61 reviews2016
Dev: Sub Orbital Software
Windows
Median: 3.2 hrsMean: 3.8 hrs≥1hr: 92%
GalaxIverse is a top down fast paced vertical blastathon, Battle Fleets and formations of aliens with the occasional boss thrown in for good luck.
Why similar: Action 49.8%, Indie 36%, Aliens 14.2%
- #12 Shooting Saucer
88% matchVery Positive91% of 54 reviews2023
Dev: SinksAdventure
Windows
A flying saucer chases you all over the galaxy. Run away, defeat enemies, and evolve to avoid getting abducted
Why similar: Action 38.5%, Aliens 31.3%, Space 25.8%, Indie 4.5%
- #13 Nomad Fleet
89% matchMixed66% of 214 reviews2016
Dev: Autarca
Windows · Mac · Linux
Median: 3.1 hrsMean: 3.2 hrs≥1hr: 79%
Nomad Fleet is a RTS game where you must lead the last remnants of Mankind to safety after a mysterious alien race has hunted them near extinction. Lead a fully armed fleet of battleships, carriers and fighters through a series of randomized scenarios and encounters where they must fight for their survival while scavenging for resources,...
Why similar: Space 51.5%, Indie 48.5%
- #14 Alien Attack
89% matchMostly Positive77% of 243 reviews2016
Dev: Alien Jellyfish
Windows
Median: 3.8 hrsMean: 5.8 hrs≥1hr: 97%
You are a space trooper. Your crew finished the cleaning mission and left you alone by accident. Now you are surrounded by aliens. Persist them as long as you can.
Why similar: Action 61.2%, Indie 38.8%
- #15 Beat the Humans
85% matchMostly Positive77% of 66 reviews2025
Dev: Dochungryest
Windows
Beat the Humans is the turn-based tactical strategy game. Here you lead an army of aliens against invaders from the human race. Collect your squad, protect planets, strengthen your army with equipment and look for allies if you want to survive and win.
Why similar: Action 100%
- #16 Deep Space Exploitation
82% matchVery Positive96% of 142 reviews2025
Dev: JuhrJuhr
Windows
Deep Space Exploitation is a space mining game featuring 2D physics, fully destructible asteroids, and a story of survival under an exploitative corporation. Use your equipment wisely, upgrade your ship, and make difficult decisions to secure your future!
Why similar: Resource Management 35.1%, Action 34%, Space 30.9%
- #17 Exophobia
83% matchVery Positive88% of 144 reviews2024
Dev: Zarc AttackPub: PM Studios, inc.
Windows
Explore and fight your way through a crashed human spaceship infested with relentless hordes of aliens as you become more powerful with exciting weapon upgrades and powerups in this retro inspired first-person shooter.
Why similar: Aliens 61.7%, Space 38.3%
- #18 Trashed
86% matchMixed46% of 150 reviews2021
Dev: Josh PresseisenPub: Crescent Moon Games
Windows
Take over a disfunctional Waste Management Facility on a distant planet. Build incinerators, recyclers, robots, turrets, and more. Battle vicious creatures on the planet's surface with powerful weapons!
Why similar: Action 51.8%, Indie 35.6%, Resource Management 12.6%
- #19 Unnamed Space Idle
80% matchVery Positive93% of 4,489 reviews2023
Dev: SylvPub: Jdog Corp
Windows · Linux
Median: 10.2 hrsMean: 302.6 hrs≥1hr: 78%
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.
Why similar: Space 37.7%, Resource Management 35.6%, Aliens 26.7%
- #20 Galactic Force
84% matchMostly Positive72% of 89 reviews2018
Dev: FreezeNova
Windows
Galactic Force is a sci-fi FPS loaded with frantic action and lots of firepower.
Why similar: Action 48%, Indie 33.9%, Aliens 18.1%
- #21 Bad Caterpillar
81% matchVery Positive95% of 150 reviews2016
Dev: Fun Infused Games
Windows
Median: 2.8 hrsMean: 3.3 hrs≥1hr: 88%
Bad Caterpillars and their swarms of insect hordes are invading. Get to your ship, man the lasers, and save the galaxy from caterpillars, scorpions, spiders, and a slew of other ill-tempered giant killer insects.
Why similar: Action 57.8%, Indie 42.2%
- #22 Alien Market Simulator
75% matchVery Positive85% of 158 reviews2026
Dev: Silly Sloth StudiosPub: Shadow Owl Studios
Windows
Run a market on your space station. Restore and upgrade the station, expand your services, and sell to a variety of alien customers. Experience the challenge of managing a business in space and growing your market
Why similar: Aliens 29.7%, Space 29.2%, Resource Management 28.6%, Indie 12.5%
- #23 Roswell Ranch
78% matchMixed59% of 66 reviews2024
Dev: HELIX Games
Windows
Howdy, stranger! Hide from a vigilant UFO, find weapon components, and protect the farm from malevolent extraterrestrial threats.
Why similar: Action 86.7%, Indie 13.3%
- #24 It's time to get out from the solar system
82% matchMostly Negative55% of 128 reviews2015
Dev: WTFOMGames
Windows · Linux
Median: 3.0 hrsMean: 3.5 hrs≥1hr: 90%
A game with a futuristic anti-utopian story — a hardcore space shooter with RPG elements.
Why similar: Action 50.5%, Space 49.5%
- #25 Space Scavenger
78% matchVery Positive87% of 320 reviews2021
Dev: Red Cabin Games
Windows
Median: 2.1 hrsMean: 14.9 hrs≥1hr: 68%
Action roguelike where you build and command your own spaceships. Battle enemies, explore planets and customize your ship on the fly. Make the best use of the quirky ship modules you find, ranging from slingshots to ion cannons, to try and avoid certain death.
Why similar: Aliens 38.8%, Space 33.2%, Action 28%
- #26 ALIENS INVADED OUR PLANET
81% matchMixed60% of 90 reviews2018
Dev: Kerim Kumbasar
Windows
Aliens Invaded Our Planet is a Multiplayer / CO-OP (Up to 6P) FPS & Arcade Style Action game, the game is about alien invasion in 1900s Richalley Town. Shoot and run for your life against the aliens!
Why similar: Action 59.6%, Indie 40.4%
- #27 Power of Ten
76% matchMostly Positive79% of 256 reviews2023
Dev: Pew Times Three
Windows · Mac
Median: 42 minMean: 4.3 hrs≥1hr: 39%
Fly a star-fighter against a bloodthirsty armada. Gather weapons, resources, and upgrades to help you push back the relentless assault while protecting the galaxies' civilians!
Why similar: Space 56.9%, Action 43.1%
- #28 PLANETS OF WAR
79% matchMixed59% of 298 reviews2017
Dev: Indiecode Games
Windows
Median: 18 minMean: 2.7 hrs≥1hr: 11%
This is a Short Clicking Adventure Game in which you Save Earth from an Alien Invasion.
Why similar: Action 48.8%, Indie 31.1%, Space 20.1%
- #29 Satellite Rush
79% matchMostly Positive79% of 76 reviews2016
Dev: Kimeric LabsPub: Plug In Digital
Windows · Mac · Linux
Median: 3.1 hrsMean: 3.4 hrs≥1hr: 87%
Satellite Rush is a sci-fi top-down shooter with pixel art graphics and Roguelike elements. Take control of an abducted office worker and blast through Satellite Moebius, a space gladitorial arena where you'll have to please the audience to get new itens and survive!
Why similar: Action 61.4%, Indie 38.6%
- #30 Captain Starshot
77% matchMostly Positive73% of 277 reviews2019
Dev: Double Door Games
Windows
Fight fierce hostile alien space ships to neutralize their defenses before you board their ships and battle intense on-foot encounters. Eliminate their forces and steal their technology to upgrade your squad with different abilities and save the galaxy!
Why similar: Action 29.5%, Aliens 26.7%, Space 22.2%, Indie 21.6%
- #31 Blast-off
77% matchVery Positive87% of 423 reviews2018
Dev: Quad-Games
Windows
Median: 3.4 hrsMean: 6.1 hrs≥1hr: 95%
Blast-off is a hardcore jumper/runner/shmup, where your alter ego will be a ball of anti-matter seeking to leave our Universe. Anti-matter is extremely difficult to exist in our universe, because when it contact with matter it annihilates.
Why similar: Action 42.3%, Indie 29%, Space 28.7%
- #32 Alien Death Mob
74% matchVery Positive94% of 52 reviews2021
Dev: Pug Fugly GamesPub: Thalamus Digital
Windows
Aliens have invaded Earth! Towns, cities, deserts, they're everywhere! Take on the role of Earth's last super soldier and confront the alien menace in this intense twin stick shooter!
Why similar: Action 50.9%, Aliens 29.5%, Indie 19.5%
- #33 Space Gray X
72% matchPositive80% of 50 reviews2024
Dev: Galactic Geckon
Windows
Space Gray X is a side-scrolling bullet-hell action game where you battle alien invaders, starting from Earth and advancing into space, unlocking advanced aircraft to aid your mission.
Why similar: Space 35.1%, Aliens 34.8%, Action 30.1%
- #34 Cosmonator
75% matchVery Positive87% of 102 reviews2019
Dev: Bourbontank
Windows
Cosmonator is an 'RPG-em-up': a hybrid of classic fast-paced top-down shoot-em-up action infused with deep character building elements. Build up your own unique alien-killing machine to avenge the destruction of planet Earth!
Why similar: Action 45.4%, Indie 29.4%, Aliens 14.2%, Space 11%
- #35 Deep Eclipse: New Space Odyssey
76% matchMixed66% of 261 reviews2014
Dev: Ultravision InteractivePub: Conglomerate 5
Windows
Median: 3.1 hrsMean: 8.0 hrs≥1hr: 92%
Deep Eclipse: New Space Odyssey is the ultimate space thriller in the best tradition of the genre. You're the pilot of a space fighter, accidentally catapulted into a parallel universe populated by hostile alien creatures; and they're not happy to see you! To get out of this hell, do your best, to destroy hordes of enemies.
Why similar: Action 38.2%, Space 36.3%, Indie 25.5%
- #36 Dome Keeper
68% matchVery Positive92% of 22,498 reviews2022
Dev: BippinbitsPub: Raw Fury
Windows · Mac · Linux
Median: 4.2 hrsMean: 11.7 hrs≥1hr: 87%
Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!
Why similar: Action 40.6%, Resource Management 31.4%, Space 28.1%
- #37 Artificial Extinction
73% matchMostly Positive76% of 264 reviews2020
Dev: 100Hr Games Inc
Windows
You have 9 days to find a safe place on the planet. Your ship is low on fuel and you have to land. Setup sentry guns around you to defend yourself while you collect more fuel for the ship. AI controlled Drones and Tanks attack you trying to find weaknesses in your defenses.
Why similar: Action 47.5%, Indie 31.8%, Resource Management 20.7%
- #38 Psycho Starship Rampage
74% matchVery Positive87% of 159 reviews2015
Dev: Ballistic FrogsPub: TyGAMES
Windows · Mac · Linux
Median: 3.1 hrsMean: 4.3 hrs≥1hr: 94%
You play the psychotic A.I. of a warship lost in space which tries to come back to Earth. Build your spaceship from scratch. Load it with weapons. And use your creation to destroy waves of innocent aliens throughout numerous levels. Loot their carcasses, extend your ship and jump to the next sector for more action!
Why similar: Space 36.3%, Action 36.3%, Indie 27.4%
- #39 Future War Tactics: SOF vs Alien Invasion – Turn-Based Strategy
68% matchMixed61% of 157 reviews2025
Dev: QuadCom InteractivePub: Brightika, Inc.
Windows
Future War Tactics: SOF vs Alien Invasion - a turn-based strategy where you command SOF forces against an alien threat. Investigate disappearances, fight the invaders, and uncover the mystery. Every decision affects the fate of humanity.
Why similar: Aliens 81.8%, Indie 18.2%
- #40 Radiant Defense
73% matchVery Positive83% of 149 reviews2014
Dev: Hexage
Windows
MILLIONS OF ALIENS WILL DIE!Radiant Defense is a tower defense game set in a vibrant universe invaded by countless alien hordes.Build your space fortress any way you wish, set up wide variety of weapons and traps and let the invasions begin!
Why similar: Space 30.7%, Action 26.5%, Indie 24.9%, Aliens 17.9%
- #41 Shortest Trip to Earth
70% matchMostly Positive77% of 1,437 reviews2019
Dev: Interactive Fate
Windows · Linux
Median: 3.2 hrsMean: 6.5 hrs≥1hr: 88%
Shortest Trip to Earth is a roguelike spaceship simulator focused on exploration, ship management and tactical battles. Embark on a perilous journey across the universe with nuclear missiles, armed crew and a cat.
Why similar: Space 34.1%, Resource Management 33.5%, Aliens 32.4%
- #42 Freaking Meatbags
73% matchVery Positive86% of 174 reviews2015
Dev: Wild FactorPub: Plug In Digital
Windows · Mac · Linux
Median: 36 minMean: 4.7 hrs≥1hr: 37%
Land on a planet, pick up some rocks, leave before the solar system explodes. Oh, and don't die in the nightly robot attacks! Freaking Meatbags is a humorous real-time strategy game that's all about building a base, mixing meatbag DNA, then convincing those dolts to help you gather resources.
Why similar: Action 42.9%, Indie 34%, Resource Management 23.1%
- #43 UFOPHILIA
65% matchMostly Positive73% of 93 reviews2026
Dev: k148 Game StudioPub: JanduSoft
Windows
UFOPHILIA is a first-person psychological horror game where you explore areas marked by alien phenomena. Use specialized equipment to detect, identify, and photograph aliens—but do so at your own risk... They are watching you too.
Why similar: Aliens 72.2%, Indie 27.8%
- #44 Luminosity
72% matchVery Positive84% of 63 reviews2015
Dev: Windmill Games
Windows
Median: 2.6 hrsMean: 3.3 hrs≥1hr: 71%
Luminosity is a fast paced arcade game. You take the control of a space ship and your objective is to close off the enemy drones and conquer a certain percent of the map in order to blow them up. Things quickly escalate and you face an increasing number of unique and challenging enemies and environments all trying to destroy your laser...
Why similar: Action 59.6%, Indie 40.4%
- #45 Eventide Matter
62% matchOverwhelmingly Positive96% of 939 reviews2025
Dev: Ottropi Games
Windows
A 2D space mining adventure. Mine exotic resources, unlock powerful equipment, and fend off relentless enemies to build an inter-dimensional portal, the last hope of salvation for your civilization.
Why similar: Space 48%, Resource Management 29.4%, Indie 13.8%, Action 8.9%
- #46 Sporbs
64% matchMostly Positive78% of 96 reviews2026
Dev: Who Nose Studios
Windows · Mac
Pop alien organisms like space bubble wrap in this satisfying incremental. Upgrade your extraction tech, unlock unique abilities, automate a factory, and expand into new areas to maximise your yield.
Why similar: Resource Management 30.7%, Space 30.5%, Indie 23.1%, Aliens 15.7%
- #47 Deep Space Classic
71% matchMixed59% of 107 reviews2018
Dev: Bondo Games
Windows
An alien force is threatening to destroy the stability of the galaxy! Play as an unknown creature or a Spacefleet Officer in this Online Sci-Fi Horror!
Why similar: Action 60.7%, Indie 39.3%
- #48 Defend Earth: Xenos Survivors
67% matchMostly Positive75% of 67 reviews2023
Dev: ReijaPub: indie.io
Windows
You are Earth's last line of defense in a relentless alien invasion. Experience intense top-down roguelite action across diverse landscapes, fighting invaders with a versatile arsenal. Outsmart, outgun, and survive your foes. Every run increases the challenge - so adapt, evolve, dominate!
Why similar: Aliens 43.7%, Action 33.8%, Indie 22.5%
- #49 Pixel Space Battles
71% matchMostly Negative37% of 81 reviews2017
Dev: Nikita "Ghost_RUS"Pub: Ghost_RUS Games
Windows
Median: 6 minMean: 2.9 hrs≥1hr: 12%
Fly for a spaceship and destroy enemy alien ships to return to your homeplanet – Nibiru
Why similar: Action 58.6%, Indie 41.4%
- #50 Mr Blaster
70% matchMixed64% of 84 reviews2017
Dev: ENTERiPub: Forever Entertainment S. A.
Windows · Mac · Linux
Median: 3.5 hrsMean: 5.2 hrs≥1hr: 94%
Mr Blaster is a higher-level space adventure with an aim to conquest the universe. It’s a way to test strategic playing skills and the precision of shooting. A galactic war over the conquest of a planet and seizing the opponent’s flag
Why similar: Action 62.7%, Indie 37.3%
- #51 Unstoppable Gorg
70% matchMostly Positive79% of 307 reviews2012
Dev: Futuremark
Windows · Mac
Median: 36 minMean: 6.6 hrs≥1hr: 40%
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Why similar: Action 34.2%, Indie 26.6%, Aliens 25.2%, Space 14.1%
- #52 Space Wars
67% matchVery Positive82% of 124 reviews2020
Dev: High and WidePub: khukhrovr
Windows
Defend Earth's orbital station from alien invaders in SPACE WARS, a fast-paced arcade shooter. Customize your ship, upgrade weapons, and battle through intense levels to save humanity in this action-packed space adventure.
Why similar: Aliens 45.7%, Space 35.7%, Indie 18.7%
- #53 Final Directive
68% matchVery Positive83% of 88 reviews2018
Dev: Lazy Monday GamesPub: Lazy Monday Ltd
Windows · Mac · Linux
Final Directive is a story driven shooter set in a space station disastrously infested by alien mutants. Find the crew, contain the infestation, and most importantly: make it out alive.
Why similar: Action 60.6%, Indie 39.4%
- #54 The Wraith of the Galaxy
65% matchMostly Positive78% of 189 reviews2023
Dev: Whale Rock Games
Windows
The Wraith of the Galaxy is a third-person space combat game. Aliens have taken over outer space in order to conduct experiments on entire planets. Destroy them or they will destroy you.
Why similar: Action 61.8%, Space 38.2%
- #55 Ziggy's Cosmic Adventures
65% matchMixed61% of 69 reviews2023
Dev: Stardust Collective
Windows
Ziggy's Cosmic Adventures is a VR cockpit game combining ship management with action-arcade combat. You play as a bounty hunter with possibly questionable morals, currently in possession of a little alien that you may or may not have stolen from the evil Empire. Do you have what it takes to survive?
Why similar: Aliens 48.8%, Action 34.3%, Space 12.2%, Resource Management 4.8%
- #56 Walkover
69% matchMixed64% of 138 reviews2015
Dev: Millenium Project Enterprises
Windows
Median: 1.2 hrsMean: 42.2 hrs≥1hr: 53%
It is WAR!Team up with your comrades to stand against the pesky aliens.
Why similar: Action 58.6%, Indie 41.4%