- #1 Galactic Battles
97% matchMostly Negative37% of 125 reviews2018
Dev: IndieLipPub: Conglomerate 5
Windows
Median: 0 minMean: 5.5 hrs≥1hr: 23%
Galactic Battles is a complex 2D top-down space shooter in which you have to fight with alien invaders.
Why similar: Action 49%, Indie 33.5%, Retro 17.5%
- #2 DOSMan: Space Aliens in Space!
95% matchVery Positive85% of 73 reviews2024
Dev: DOSMan Games
Windows
Planet DOS is under attack by Space Aliens, DOSMan needs to fend them off and defend his home planet!
Why similar: Action 33.6%, Shooter 27.9%, Old School 22.5%, Retro 16%
- #3 Psi Project
96% matchMixed40% of 155 reviews2017
Dev: Vyacheslav ShilikhinPub: Conglomerate 5
Windows
Median: 6 minMean: 7.2 hrs≥1hr: 29%
Psi Project is a hardcore 2D shooter with elements of horror. The main character wakes up in an unknown place. Absolutely remembers nothing. Who he is and how he got here. Throughout search of answers he is strongly plagued by different kinds of hallucinations.
Why similar: Action 26.2%, Indie 20.2%, 2.5D 18.2%, Old School 13.5%, Retro 11.7%
- #4 Pixel Space Battles
96% matchMostly Negative37% of 78 reviews2017
Dev: Nikita "Ghost_RUS"Pub: Ghost_RUS Games
Windows
Median: 6 minMean: 3.0 hrs≥1hr: 12%
Fly for a spaceship and destroy enemy alien ships to return to your homeplanet – Nibiru
Why similar: Action 57.2%, Indie 42.8%
- #5 Occupation 2.5
94% matchMostly Positive79% of 57 reviews2021
Dev: the3daction.comPub: None
Windows
Attack from Outer Space. Classic old-school First/Third person shooter. Fight against zombies, mutants, monsters to save the Earth!
Why similar: Action 54.3%, Old School 45.7%
- #6 Shooting Saucer
91% matchVery Positive90% of 51 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: Shooter 33.5%, Action 31.5%, Old School 19.7%, Retro 11.5%, Indie 3.9%
- #7 ProtoGalaxy
94% matchMixed59% of 68 reviews2010
Dev: Source Studio Ltd.
Windows
Median: 12 minMean: 4.6 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 54.8%, Indie 45.2%
- #8 Alien Attack
92% matchMostly Positive77% of 241 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 59.8%, Indie 40.2%
- #9 Humanity Asset
93% matchMostly Negative31% of 509 reviews2014
Dev: Browny ApplicationPub: KISS ltd
Windows
Median: 3.3 hrsMean: 4.0 hrs≥1hr: 94%
Humanity Asset is a Metroid-style 3D platformer that pays homage to the traditional retro classic shoot ‘em up genre. Aliens have invaded Earth to strip the planet of its resources, to save their own dying planet. As in all classic shoot 'em ups, only you can save the day - now there’s a surprise!
Why similar: Action 72.2%, Indie 27.8%
- #10 Project Mercury
91% matchMixed58% of 587 reviews2017
Dev: Raxasoft Games
Windows
Median: 6 minMean: 9.3 hrs≥1hr: 24%
Make your way on foot, on a hoverbike, up skyscrapers, and down bottomless pits, as you exterminate a threat of unknown origin!
Why similar: Action 39.9%, Retro 32%, Indie 28.1%
- #11 Space Killer
88% matchMostly Positive78% of 55 reviews2023
Dev: Two friends
Windows
Take on the role of a spaceship pilot and protect the universe from an alien invasion. Destroy hordes of infected ships and defeat powerful bosses. Unlock new ships, create your own builds in this Roguelite, Survivors, RPG game🚀
Why similar: Old School 100%
- #12 Space Gray X
86% matchVery Positive80% 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: Shooter 59%, Action 41%
- #13 Super Meat Shooter
90% matchMostly Negative39% of 110 reviews2017
Dev: Drop_Dead_Fred (Фред)Pub: Conglomerate 5
Windows
Median: 12 minMean: 13.9 hrs≥1hr: 43%
Retro first person shooter about love story with ocean of gore effects in an unusual world of strange dream with incredible creatures. 23 different levels, 12 types of enemies, 6 weapons and that's not all!
Why similar: Action 27.7%, Indie 18.9%, 2.5D 15.8%, Old School 13.9%, Retro 13.9%
- #14 Intrude
89% matchVery Positive82% of 211 reviews2016
Dev: Michal Kruba
Windows
Median: 2.5 hrsMean: 3.4 hrs≥1hr: 72%
Intrude is a first-person shooter. Your mission is to get into a long time abandoned base, suddenly taken over by some kind of private military, find your way up and destroy the source of a signal comming from the base. Collect as much data as you can to find out what they are up to.
Why similar: Action 38.9%, Indie 26.8%, Retro 17.4%, Shooter 17%
- #15 Exophobia
84% matchVery Positive88% of 136 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: Old School 36.4%, Shooter 35.3%, Retro 28.3%
- #16 Deep Eclipse: New Space Odyssey
89% matchMixed67% of 252 reviews2014
Dev: Ultravision InteractivePub: Conglomerate 5
Windows
Median: 3.1 hrsMean: 6.7 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 41.3%, Shooter 29.6%, Indie 29.1%
- #17 Abstractanoid
86% matchMixed65% of 55 reviews2018
Dev: katanadeathPub: Alien Jellyfish
Windows
Median: 36 minMean: 1.7 hrs≥1hr: 19%
A retro-style arkanoid about fighting aliens to save the mankind.
Why similar: Action 58.3%, Indie 41.7%
- #18 Perilous Warp
83% matchMostly Positive74% of 373 reviews2020
Dev: Crystice Softworks
Windows · Mac · Linux
Median: 2.2 hrsMean: 4.4 hrs≥1hr: 70%
Perilous Warp is a fast-paced indie retro-shooter inspired by the classic 3D-actions. Communication with a distant space colony has been lost, and you bravely step into the teleporter with the desire for glorious adventures. But do not expect to win in a heartbeat!
Why similar: Action 38.8%, Indie 28.5%, Retro 12.8%, Old School 12.4%, Shooter 7.5%
- #19 RX squad
85% matchMostly Positive70% of 81 reviews2016
Dev: YFYX GAMESPub: My Way Games
Windows
Median: 3.1 hrsMean: 3.7 hrs≥1hr: 87%
The earth is suffering from an attack of space monsters, and the terran defense forces are called for combat and the annihilation of the monsters. The RX Squad with their advanced ships risks themselves to keep the earth in peace.
Why similar: Action 57.2%, Indie 42.8%
- #20 ALIENS INVADED OUR PLANET
84% matchMixed59% of 87 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 58.3%, Indie 41.7%
- #21 Alien Death Mob
81% matchVery Positive94% of 50 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 34.7%, Shooter 19.9%, Old School 17.8%, Indie 14%, Retro 13.6%
- #22 2023: Alien Bugs Invade Earth
79% matchMostly Positive77% of 53 reviews2023
Dev: StarTroop LLC
Windows
Why are alien insectoids invading Earth in 2023? This narrative driven 2D shooter pits you against a seemingly hopeless battle against the invading Insectoids. How will you (and Earth) manage to survive? What hidden technological, historical, and spiritual secrets will you discover as a result?
Why similar: Action 46.8%, Shooter 33.8%, Indie 19.4%
- #23 UFO - Unfortunately Fortunate Organisms
82% matchVery Positive86% of 63 reviews2017
Dev: Rebourne StudiosPub: Back To Basics Gaming
Windows · Mac · Linux
Median: 3.2 hrsMean: 3.2 hrs≥1hr: 69%
U.F.O is an alien resource management action game where you beam up humans using your spaceship and churn them into resources to upgrade your spaceship. In 30 days, the evil galactic warlord will complete his master weapon. Can you defeat him in time or will he bring extinction to your race?
Why similar: Action 57.8%, Indie 42.2%
- #24 Space Pressure 3D: Prelude
77% matchVery Positive85% of 130 reviews2023
Dev: Maze TeamPub: Tinaynox
Windows
Immerse yourself in the story of two brave space amazons who dare to challenge the irresponsible aristocratic system. Overcome all the obstacles that appear on your way - hordes of space scavengers, armies of General Admiral and get to the main villain - Evil Moneybag!
Why similar: Action 33.4%, Retro 26%, Indie 21.1%, Shooter 19.6%
- #25 Gundroid
73% matchVery Positive96% of 57 reviews2025
Dev: Kitogoru Games
Windows
Protect the Earth from an alien invasion in this Run N’ Gun action spectacle. Take control of G.U.N.N.R. and battle your way through a blast from the pixelated past.
Why similar: Action 24.9%, Retro 24.8%, Old School 21.9%, Indie 16%, Shooter 12.5%
- #26 Ruin City Gasolina
82% matchMostly Negative36% of 96 reviews2017
Dev: LillyWelland inc.Pub: Bitlock Studio
Windows
Median: 0 minMean: 6.8 hrs≥1hr: 13%
Eliminate the invasion of mechanical invaders and save what remains of the once great city.
Why similar: Action 57.2%, Indie 42.8%
- #27 Squad 51 vs. the Flying Saucers
76% matchVery Positive93% of 244 reviews2022
Dev: LoomiartsPub: WhisperGames
Windows
Median: 1.0 hrsMean: 2.4 hrs≥1hr: 51%
UFOs! Aliens! Aircrafts! Resistance! SHOOT 'EM UP! Squad 51 vs. the Flying Saucers is a spaceship shooter with 2D gameplay and 3D environment. Enjoy a smart combination of a fast-paced shooting experience and the 1950's sci-fi movies aesthetic, with live-action cutscenes.
Why similar: Old School 54.1%, Retro 45.9%
- #28 Helium
81% matchMixed51% of 112 reviews2017
Dev: rocketship
Windows
Median: 1.2 hrsMean: 7.5 hrs≥1hr: 54%
Hardcore sci-fi first person shooter. You are a liaison on Vega 237 spacecraft. All crew members died and you are all by yourself in the midst of an unknown planet. Your goal is to find out what happened to the crew and establish the signal's nature.
Why similar: Action 58.2%, Indie 41.8%
- #29 Space Survival
80% matchMixed50% of 150 reviews2016
Dev: UltraShock Gaming LLCPub: Conglomerate 5
Windows
Median: 3.2 hrsMean: 4.0 hrs≥1hr: 79%
Space Survival is the next great SIMPLE 2D casual space action shooter where you have to defend against wave of enemies, have fast reflexes and strong will to win. It is great way to relax, but also a great challenge. How long can you stay focused?
Why similar: Action 43%, Indie 30%, Shooter 27%
- #30 Bad Caterpillar
78% matchVery Positive95% of 150 reviews2016
Dev: Fun Infused Games
Windows
Median: 2.7 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 56.5%, Indie 43.5%
- #31 Flashback 2
74% matchMixed43% of 152 reviews2023
Dev: Microids Studio ParisPub: Microids
Windows
Immerse yourself in an action-packed cyberpunk universe where the fate of humanity itself hangs in the balance. The Morphs are preparing their final attack, determined to enslave every civilization in the Solar System — and it's your mission to fight back!
Why similar: 2.5D 42.5%, Action 35.5%, Retro 21.9%
- #32 Distant Space
75% matchVery Positive86% of 2,983 reviews2016
Dev: PixelMouse
Windows
Median: 3.7 hrsMean: 9.4 hrs≥1hr: 79%
Distant Space are present the arcade game of cosmic fights in arcade style of the 80's, this is a game where you can control the spaceship and forced to destroy extraterrestrials, which are moving in the certain order.
Why similar: Indie 29.7%, Action 27.3%, Retro 24.4%, Shooter 18.7%
- #33 Space Beret
77% matchMixed52% of 690 reviews2016
Dev: Amaterasu Software
Windows
Median: 2.9 hrsMean: 4.0 hrs≥1hr: 87%
Space Beret is a top down sci-fi shooter set in a "Starship Troopers" and "Crimsonland" inspired setting. In it, mankind is forced to fight hordes of horrible monstrosities in a desperate struggle for survival.
Why similar: Action 56.5%, Indie 43.5%
- #34 Extraneum
68% matchVery Positive97% of 103 reviews2024
Dev: David JalbertPub: Hellforge Studios
Windows · Linux
Extraneum is an old-school, sci-fi single-player first person shooter with an emphasis on exploration and secret hunting. Fight your way through biohacked monstrosities and stop their progress before they take control of the entire world.
Why similar: Retro 41.5%, Action 30.9%, Shooter 27.6%
- #35 ASTRONAUTILUS
72% matchVery Positive95% of 61 reviews2022
Dev: neozoid.games
Windows
Your ship has crash-landed on a stray rogue planet, and you're out of fuel... It's up to you to delve beneath the frozen surface and find a way to get your ship back into space while fighting strange sea creatures and uncovering the mysteries of the world beneath the ice!
Why similar: Action 32.1%, Shooter 29%, Retro 27.3%, Indie 11.5%
- #36 Enemy Mind
75% matchVery Positive85% of 797 reviews2014
Dev: Schell Games
Windows
Median: 3.0 hrsMean: 4.0 hrs≥1hr: 80%
A retro shooter with a new power: the power to become any ship.Lost in the depths of space, you are a being of pure psychic energy with the uncanny power to take over and control anything you see in order to survive.Built for PC, Enemy Mind lets you battle your way through 70+ waves of challenging enemies.
Why similar: Action 27.9%, Shooter 23.4%, Retro 23%, Indie 13.8%, Old School 11.8%
- #37 Robotex
76% matchMostly Negative38% of 978 reviews2014
Dev: YFYX GAMESPub: My Way Games
Windows · Mac · Linux
Median: 2.4 hrsMean: 2.9 hrs≥1hr: 66%
Life on Earth is unsustainable. Humanity must seek a new home but the only planet found is very hostile. You were sent on a expedition to slay the monsters inhabiting the surface of this planet. In this adventure you end up being the villain. Game contains two basic controls, many puzzles and lots of guns and enemies.
Why similar: Action 55.4%, Indie 44.6%
- #38 Rogue Invader
71% matchVery Positive92% of 64 reviews2021
Dev: Squishy Games
Windows · Mac
Median: 3.1 hrsMean: 4.9 hrs≥1hr: 91%
1-Bit Roguelite Action Shooter.
Why similar: Action 38.3%, Shooter 32.5%, Retro 29.2%
- #39 Mother Hub
66% matchMostly Positive79% of 130 reviews2025
Dev: ODale Studios
Windows
A retro FPS with an artistically gritty setting from the early 2000's. Uncover futuristic weapons lost to time and face off against terrifying bosses. Do you have what it takes to stand against the darkness and save humanity from the brink of extinction?
Why similar: Action 51.7%, Shooter 48.3%
- #40 Destructivator 2
73% matchVery Positive96% of 55 reviews2020
Dev: Pug Fugly GamesPub: Thalamus Digital
Windows
A platform shooter that brings 90's gaming smashing into your face! Blast and insta-melee your way through hordes of alien soldiers, robots, bosses and loads more. Fight on foot, in a fighter or in a bomber. Take on bosses and ensure that the alien menace won't threaten Earth ever again!
Why similar: Old School 28.7%, Action 22.5%, Shooter 19.4%, Retro 18.4%, Indie 10.9%
- #41 One Way Road: Firehunt
67% matchMostly Positive73% of 119 reviews2024
Dev: Shabunov LeonidPub: Valkyrie Initiative
Windows
Median: 42 minMean: 3.4 hrs≥1hr: 33%
Firehunt is a prologue for the main story One Way Road. Take part in space battles as you travel across the galaxy and fight to save humanity. This cinematic narrative driven action-focused space shooter, will take you on a journey into the near future, and put the destiny of mankind in your hands.
Why similar: 2.5D 49.5%, Action 42.4%, Indie 8.2%
- #42 The guard of dungeon
74% matchMixed60% of 195 reviews2017
Dev: HeXPub: Laush Studio
Windows
Median: 3.0 hrsMean: 4.0 hrs≥1hr: 92%
The Guard of Dungeon - This is the mad first-person shooter. The Unknown Alien Force (UAF) wants to enslave Our World. Only the Hero can save the Planet from UAF invaders.
Why similar: Action 49.1%, Indie 22.4%, Old School 15.4%, Shooter 13%
- #43 Moon Mystery
64% matchMixed66% of 685 reviews2024
Dev: CosmoscoutsPub: indie.io
Windows
Median: 2.9 hrsMean: 5.7 hrs≥1hr: 73%
The Moon's haunted - and when an astronaut loses contact with Earth, the adventure begins in full. Fill up your oxygen, load up the guns, and set out on an interstellar FPS adventure across the stars, filled with puzzles, fights, exploration, and strange secrets of the universe.
Why similar: Action 54.6%, Shooter 45.4%
- #44 Last Village
70% matchMixed70% of 56 reviews2021
Dev: AK Studio
Windows · Linux
Arriving on a hunt in a small village, you become a witness to attack of alien forces on the ground, armed with a shotgun, you decide to repulse the alien intruders.
Why similar: Action 54.7%, Shooter 45.3%
- #45 Security Guy vs AI: The Dawn of AI
70% matchVery Positive85% of 91 reviews2021
Dev: Alexander BogdanovPub: Alexander Bogdanov
Windows
Security guy vs AI is a short top-down shooter game with a mysterious story. Reveal the truth about what happened at your workplace and stop the Evil Artificial Intelligence from spreading out.
Why similar: Action 80.7%, Indie 19.3%
- #46 Grav Blazer Squared
73% matchMixed40% of 85 reviews2017
Dev: Ripknot Systems
Windows
Median: 0 minMean: 2.5 hrs≥1hr: 11%
Grav Blazer is an arcade space shooter with a focus on fast paced action. Skill based firing mechanics, rotational controlled power attacks, increasing level difficulty, and endless procedurally generated levels are some of the features players will experience.
Why similar: Shooter 33.2%, Action 29.8%, Retro 26.3%, Indie 10.7%
- #47 DEEP SPACE ANOMALY
71% matchMostly Positive78% of 107 reviews2019
Dev: DRM GMZ
Windows
Space. Anomalies. Throw down a challenge to mad alien mutants in dynamic firefights with continuous injection of adrenaline! Get ready for the most unforgettable and enchanting space confrontation of all time!
Why similar: Action 49.9%, Indie 37.3%, Shooter 12.8%
- #48 Super Destronaut DX
71% matchVery Positive88% of 92 reviews2018
Dev: Petite GamesPub: Ratalaika Games S.L.
Windows
Inspired by an arcade classic, Super Destronaut DX is retro space shooter that pits you against an enemy more dreaded than a UFO, a scoreboard.
Why similar: Action 61.4%, Indie 38.6%
- #49 Distant Space 2
69% matchMostly Positive80% of 1,501 reviews2017
Dev: PixelMouse
Windows
Median: 54 minMean: 6.2 hrs≥1hr: 46%
Distant Space 2 - is an indirect continuation of the first part, in which you will find more dynamic gameplay. Your task is to destroy enemy ships on each level to go to the next of 26 available. In addition to conventional ships, you will have to wait for the boss ships, the battle with which will not be easy.
Why similar: Action 28.7%, Retro 28.4%, Shooter 22.4%, Indie 20.5%
- #50 Chicken Invaders 1
62% matchVery Positive92% of 61 reviews2025
Dev: InterAction studios
Windows
Save Earth from an invasion of intergalactic chickens! Finger-blistering arcade shooting action for one or two players.
Why similar: Action 40.8%, Shooter 21.3%, Old School 16.4%, Retro 11.9%, Indie 9.5%
- #51 Cyborg Invasion Shooter
72% matchMixed46% of 58 reviews2017
Dev: Tero Lunkka
Windows
You are the only soldier that can save the world: Collect all the artifacts, kill several cyborgs and save the world
Why similar: Action 58.3%, Indie 41.7%
- #52 TechnoTsunami
69% matchVery Positive93% of 55 reviews2020
Dev: Neon Castle
Windows
Solve puzzles to uncover the mysteries of a space cruise ship. Fight or work together with robots which are remotely controlled by humans on Earth. Collect the technology coming from the future which might cause an apocalypse. Save the future and the past before it’s too late.
Why similar: Indie 69.9%, Action 30.1%
- #53 ReSpaced
61% matchVery Positive88% of 82 reviews2025
Dev: Elevated Ants Studio
Windows
A fast-paced first-person shooter where you master gun recoil to leap across platforms, battle various enemies, and upgrade your weapon to escape an overrun space station.
Why similar: Action 54.9%, Shooter 32.6%, Indie 12.5%
- #54 XOL: Space Mech Wars
59% matchVery Positive91% of 70 reviews2025
Dev: Michigames
Windows
Mech FPS game in all directions of space; follow the story and contribute to the fight for your homeland! Survive the space wars as an up-and-coming soldier with the toughest warriors around!
Why similar: Action 50.6%, Shooter 33.8%, Indie 15.6%
- #55 Element Space
69% matchMixed55% of 295 reviews2019
Dev: Sixth VowelPub: Inca Games
Windows
Median: 1.4 hrsMean: 6.2 hrs≥1hr: 55%
Year 2199. Assemble an elite crew and make allies to combat a shadowy organization threatening the future of humanity. Face overwhelming odds with strategy. Make your choices and save us from extinction.
Why similar: Action 58.6%, Indie 41.4%
- #56 Notrium
70% matchVery Positive94% of 72 reviews2015
Dev: Ville Mönkkönen
Windows
Median: 12 minMean: 8.1 hrs≥1hr: 36%
You have crash-landed on Notrium. Your food supplies are running low, and a pack of predatory aliens have your scent. You're out of bullets for your pistol, your only weapon a handful of rocks. A freezing night is setting in, and you are desperately looking for firewood. Can you survive?
Why similar: Old School 32.4%, Action 30.2%, Indie 19%, Shooter 18.4%
- #57 Species: Unknown
53% matchVery Positive95% of 6,260 reviews2025
Dev: WanadevStudio
Windows
Median: 4.7 hrsMean: 7.3 hrs≥1hr: 91%
Species: Unknown is a 1 to 4 players co-op survival horror. Complete high-risk missions aboard an abandoned ship while being hunted by an unknown creature. Survive and upgrade your gear to face each new threat that lurks in the dark.
Why similar: Shooter 37.4%, Action 36%, Indie 26.6%