
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.
60+ similar titles based on shared tags and player behavior. Themes include Indie, Action, Space, Sci-fi.

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.

Procyon
It's the future! And humanity is, predictably, under attack by extraterrestrial forces. Lucky for us we have an experimental ship that's never before been flown that will surely...uh, possibly...well, implausibly be able to win the war! All we need now is a pilot or two.

SOL: Exodus
Take on the role of the Lieutenant Commander, ace fighter pilot, as you search for a new home, battle a mysterious enemy, and rescue humanity from a fiery end.
It's the future! And humanity is, predictably, under attack by extraterrestrial forces. Lucky for us we have an experimental ship that's never before been flown that will surely...uh, possibly...well, implausibly be able to win the war! All we need now is a pilot or two.
Take on the role of the Lieutenant Commander, ace fighter pilot, as you search for a new home, battle a mysterious enemy, and rescue humanity from a fiery end.
Earth has been destroyed. Mankind is fractured. The galaxy is at war. But one hope remains: a new home for mankind. Probes detected a habitable planet in the Orion sector. You must fight your way to it, but nothing is as it seems. A more devious plan is underway that threatens the entire galaxy.
Why similar: Indie 100%
Mayan prophecy foretells the beginning of a new world age on December 21, 2012. Can the four heroes save humanity by defeating these evil foes?
Aliens have taken over the planet and enslaved humanity. Only you have the know-how to drive back the dastardly threat, free your fellow Earthlings and SAVE THE WORLD.
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?
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
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?
NOW AVAILABLE! When the Earth falls to an extra-terrestrial invasion, humanity becomes an endangered species. Earthfall is a four-player cooperative shooter that challenges players to survive hordes of ruthless alien drones and their inscrutable masters.
Why similar: Action 100%
A non-shooting shoot 'em up where you must grow, make friends, and survive together.
The Battle of Sol is an intense space action game where you participate in epic capital ship battles, thrilling dogfights, space station raids, and much more as you liberate humanity's solar system from enemies determined to bring us to its fiery end.
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!
Earth’s Dawn is looming and the fate of the planet hangs in the balance! Dive into frantic side-scrolling combat and take the fight to the alien horde before destroying hulking bosses!
Drox Operative is a starship action RPG with warring alien races, fierce space battles, a dynamic, evolving galaxy, and co-op multiplayer for Windows and Mac.Eons ago the Drox ruled the galaxy through their mighty Operatives. These elite starship captains were trained to accomplish the impossible at whatever cost necessary.
Command destructive spaceships to obliterate hordes of enemy vessels, while quickly solving puzzles to weave through networks of vibrantly colorful, adversarial machines!
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!
In this "starship command simulator" you will fight your way to the center of a randomly generated galaxy where a massive star is about to go supernova and destroy all life. Can you find a way to stop it?
Eliminate the invasion of mechanical invaders and save what remains of the once great city.
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 100%
Suddenly thrown into an unknown galaxy, you must explore, fight or befriend aliens and transform your ship from a small survey vessel into a powerful battlecruiser to unravel the mystery of the forces that brought you here and find your way home.
It is WAR!Team up with your comrades to stand against the pesky aliens.
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.
Can you deal with unrelenting disaster and hold your ship together long enough to destroy the enemy invaders? Repair systems, extinguish fires, arm the torpedoes, avoid deadly solar flares, destroy your friends and clone them back again; it's all in the life of a Catastronaut!
Chicken Invaders puts you at the forefront of a battle against invading intergalactic chickens, bent on revenge for our oppression of Earth chickens. This time, the chickens have hatched a devious plan to block out sunlight and freeze Earth to death!
Stranded on an alien planet, you must defend your Powercore! Use your weapons to fight hordes of alien enemies and strategically use traps in this new FPS tower-defense survival game!
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!
Why similar: Action 100%
From Space is a solo and co-op action-shooter for squads up to four players. Take on the challenge of liberating the earth from an alien infestation with your friends, using over-the-top weaponry in a post-apocalyptic world with awesomely stylized graphics. The apocalypse has never been so much fun!
Fortified is an explosive strategy shooter where players will defend the Earth against a menacing Martian invasion in the 1950s. Play as one-of-four pulp inspired heroes as they fight swarms of terrifying robots with an arsenal of Cold War era weapons and experimental technology.
Our world is in danger! Grab your gun and stop these uninvited guests!
Iron Grip: Warlord invigorates tower defense with first-person shooter elements to give a new twist to the genre.It puts you in the heat of the battle, fighting off hordes of AI-controlled invaders. Play alone or with friends, in a diverse and challenging struggle to save all of Atelia.
Salvation Prophecy is a military space epic. Human, mutant, and robotic factions are at war for galactic domination. Battles rage as space fleets collide. Invaders clash against fortified enemy colonies. Yet the greatest danger is the impending annihilation foretold by an apocalyptic prophecy.
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!
Hell Galaxy is the only game where you can experience the fusion of space battles, RPG elements, eerie specters, and daunting titans. Embark on a dark sci-fi odyssey through a galaxy teeming with ancient alien ruins and hidden secrets, where nothing is human. Not even you.
Take the challenge of surviving waves of increasingly difficult evil MuTecs! Grab a friend to hunt and slay them. Crush each wave with randomly dropped weapons & gadgets. Earn Achievements, new maps and top ranks in this Community-driven, solo-dev project. Help shape the future of this game!
Why similar: Indie 100%
Retreating ends here. Defend Bastion against evil hordes, reclaim lost powers, rebuild ancient ruins, and adapt your tactics to reverse the siege. Shape your playstyle in this hero-strategy rogue-lite solo or co-op up to 3 players.
Why similar: Action 100%
Trident's Wake is an intense co-operative twin-stick shooter in an unforgiving sci-fi setting. Join up to three other players to take back humanity's last hope - the colony ship code-named Trident – from an unknown race of alien invaders!
Control the mysterious robot army to resist falling giant aliens.
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!
Fly for a spaceship and destroy enemy alien ships to return to your homeplanet – Nibiru
A fast paced multiplayer shooter that pits aliens against humans in a strategic and action-packed struggle for survival!
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.
A modern twist on arcade shooters realized in VR. SHOOT. DESTROY. EQUIP. REPEAT. Command a heavily armed battlecruiser as you forge a fleet capable of stopping the enemy A.I. that has decimated mankind. Only with this alliance can you hope to bring humanity back from the brink.
Why similar: Action 100%
The Earth is in pieces...again! We've gotta do more to save the planet!
Why similar: Action 100%
Dal R’El and Gwyndala race against time to save their friends, their ship, new alien species and an entire planetary system before a supernova destroys them all, while battling a deadly new enemy that will stop at nothing to destroy the Protostar and change the very course of history!
Why similar: Action 100%
As Sam McRae, last surviving member of the “Titan Hauler” crew, you must hack and blast your way through an onslaught of truly bad 'bots to find a way to prevent a potential planet-destroying catastrophe.
A retro-style arkanoid about fighting aliens to save the mankind.
Save Earth from an invasion of intergalactic chickens! Finger-blistering arcade shooting action for one or two players.
This is a Short Clicking Adventure Game in which you Save Earth from an Alien Invasion.
Free the galaxies in this action platformer! Jump, swing, dig and shoot your way through uncharted planets. Give hell to the Overlord's forces and face alien foes. Earn rewards after every battle and add them to your ever-growing arsenal.
Why similar: Action 100%
Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics. Defend Earth's remaining colonies using an arsenal of deadly weapons to torch, slice, throw, and impale swarms of alien invaders.
Why similar: Indie 100%
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?
Galactic Force is a sci-fi FPS loaded with frantic action and lots of firepower.
They came without warning, squawking menacingly, their ruffled feathers darkening the sun. Invading intergalactic chickens, out to punish humanity for our oppression of their earthly brethren. Now they're back, and they're having Earth for dinner!
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: Action 100%
Welcome, hackers, you're being transferred to Eden City to defend its citizens against the alien threat! Eden Survivors is a single-player survivor-like auto-shooter where players must defeat hordes of alien invaders until the extraction time.