Top similar games like Extinction: Alien Invasion:
Extinction: Alien Invasion $4.99
Annihilate waves of aliens, build your base, improve your mercenary, do it all with a sound track bathed in rock. Extinction Alien Invasion is an arcade shooter with elements of RPG, inspired by games like: Dead nation, Shadowgrounds, Alien Breed and Alien Swarm.
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Project Rocket : Invasion Resurgence$1.99
Project Rocket is a Hack & Slash game set in a futuristic universe. Play as a member of an elite unit of space soldiers, equipped with the latest human technology, and take on the hordes of aliens invading the colonies.
Ad Astra: Sci-Fi Tower Defense$4.99
Lose yourself in an indie solo-dev. treasure that harkens back to arcade classics! All while thumping along to killer retro-inspired beats by Ovani sound. Embark on an epic tower defense adventure against awe-inspiring machine monstrosities, made by a devoted gamer for devoted gamers.
SCHAR: Blue Shield Alliance$3.99
SCHAR: Blue Shield Alliance is a cooperative twin-stick shooter that features a variety of complementing ship classes to choose from. Upgrade your ships, defeat hundreds of enemies, save the galaxy all with some friends from the comfort of your couch.
ARMED SEVEN$4.99
The year is 1989. 12 years have passed since the Gogoh Army’s invasion of Earth. Exposure to alien technology during the war enabled Earth’s own technologies to take massive leaps forward. International conflict that was previously rife in the history of mankind fell to an all-time low, and the Earth Federation was established as a...
Railgunners$2.99
Railgunners is a shooter built to highly customizable difficulty levels. Fight your way through hundreds of enemy ships, and help humanity fight back against the alien invasion!
USA 2020$1.99
The year 2020 has arrived. A herd of fuckin' ugly reptilians are rushing from the outer space. Crime rate skyrocketed! United States of America is ruined! Wipe out all 12 billion of the green scum!
Doughlings: Invasion$9.99
Another tribute paid to yet another arcade classic from the Hero Concept team! Doughlings: Invasion promises a fun gaming experience to gamers of all ages with the innovations it brings to the shooting genre.
Ultimate Starfighter$4.99
An unknown Alien Race has launched a failed attack on Earth Station Alpha and are regrouping! Fight off the incoming fleets, discover where their ships are being constructed, and launch an assault! If Earth Station Alpha is destroyed, the planet will be lost and humanity exterminated.
AF-ZERO$4.99
A tribute to the 80's games containing 7 stages with continuous action.
Arcade Classics$0.99
Collection of a few arcade classics, remade with a fresh and friendly looking art style and a beautiful soundtrack.
JET SET CORPS$6.99
JET SET CORPS is a retro-inspired shoot 'em up action platformer. Fight aliens, rescue colonists, and explore planets in this pixel art adventure. Features co-op multiplayer, endless runner mode, weapon customization, and more! Add to your wishlist now!
Fallen Times$1.99
"An unique fast-paced, action-adventure, arcade fps shooter game featuring funny stuffs, anime yuri and more, with the mixture of old school mechanic, action game style boss fights, semi-open level design, and visual novel, anime style storytelling! "
Planet Invasion$2.99
A few alien friends have placed a bet on who can get to the center of the Solar System first. Unfortunately, humans control the region, and they will do everything they can to destroy you! Since Humans are on the intergalactic endangered species list, you are not allowed to use your weapons. Good Luck!
Planet Nine$4.99
Control a customizable mech while exploring an alien world in a top down view. Your mission, set by an A.I. is to save the Ninth planet from an alien invasion. Gain levels, find loot and discover the history behind the Ninth Planet.
Riders 2491$2.99
Riders 2491 is an action shoot'em up game that pays homage to the classics of 90’s arcades with modern visuals.
Abduction$9.99
Abduction is a singleplayer psychological horror experience. When unexpected visitors arrive in the middle of the night, you must defend your farm in order to take back your land.
Space Defense$0.99
You and your space troop have a tough mission to defend Earth from an alien invasion in this epic space war. Will you be able to guide your troops to victory?
Dosoland: Snake Man's Adventure$5.99
"Dosoland: Snake Man’s Adventure" is a short and easy-to-play platformer. Explore the environments to uncover secrets, jump on enemies, and dash through obstacles. Your mission? Save Earth from an alien invasion, all while accompanied by a team of quirky and endearing friends you meet along the way.
Alien Removal DivisionFREE
The invasion has started and the secret military research facility has fallen leaving only chaos. As the only survivor, you must fight your way through the military base against a horde of frantic aliens. A.R.D. is a FREE single-player first-person shooter made by students from Breda University.
Gaia$19.99
A sci-fi base building survival game, featuring raids, agriculture, intelligent AI, natural disasters and more.
Basureroes: Invasion$11.99
“Basureroes: Invasion” is a 2D platform game with retro aesthetics in which a group of heroes with different abilities must save the world from an alien invasion. Run, jump and fight your way through twenty levels full of danger and epic boss fights.
Ripple EffectFREE
Welcome to Ripple Effect, a free VR gaming platform set in a wide array of different environments. Explore over 4 different environments or one of the 5 games included in launch. A new game will be added to the Universe every week! Play by yourself, or with one of your friends from around the world.
Black Mesa$19.99
Relive Half-Life.
Gape Kape Escape$3.99
We knew they would come to us one day. We had been observing the development of human technology for a long time. We feared this wild civilization. Now, You must reclaim the artifact they stole from us.
Ghost Mission$10.99
Inspired by stealth-action classics of the past, take control of an elite commando with the ability to turn invisible on a tense adventure where staying out of sight is the best way to stay alive, where the line between truth and fiction is always blurry, and where nothing is ever as it seems.
Woah Dave!$4.99
From the folks behind the BIT.TRIP series comes the frantic insanity that is WOAH DAVE! Help our hero, Dave Lonuts, survive an insane alien invasion and line his pockets with shiny pennies. Hurl alien eggs, skull bombs, and explosive WOAH blocks to stay alive and sky rocket yourself to high score fame and fortune.
Firebird - Steam version$2.99
Love retro shooters? Firebird is a blend of some of our teams favourite games from the space invasion genre. Battle aliens, giant space birds, tractor beams, air burst weapons, robot terrorists and massive motherships in a fight for domination.
Super Arcade Boy in Goodbye Greenies$1.99
A Retro Style Classic Shoot'em Up! In this second installment of the series, fly Super Arcade Boy through 8 levels while defeating waves of aliens and big bosses. Have funny conversations with the alien leader you are destined to defeat, then save the planet from this massive alien invasion!
Undungeon$19.99
Undungeon is a gorgeous Action/RPG driven by intense real-time combat and an immensely rich science fiction story. Travel between dimensions and change the world around you in an attempt to reconstruct the shattered Multiverse.
Enthrean Radiance : PrologueFREE
This is the prologue chapter of "Enthrean Radiance : The First Strike", an upcoming 2D action-RPG that invokes the feeling of classic Japanese games. Help Millia and Razh to save the world of Enthrean from chaos!
Bad Chicken$9.99
Bad Chicken is a retro styled sideway scrolling shoot-em-up inspired by the retro classics. It takes place in 8 locations in the Ferus system, each one with different challenges, and dangers.
Edge Of Dead: Under A Uranium Sky$10.99
A bullet hell that let's you pickup and throw the furniture! Throw grenades and activate shields, stun enemies, shoot and dodge enemy fire and set the floor ablaze. Buy a porcupine shotgun from the shop or try a rancid burrito!
Godrop$8.99
One level of warning, cosmic droplet rampage! A roguelike game featuring impact piercing. Collect holy relics, build up your energy, and morph the droplets to invade the solar system and destroy the ignorant human fleet to the ground!
SPACE DUDES vs ALIEN DUDES$0.99
SPACE DUDES vs ALIEN DUDES - Alien Dudes are attacking the Base, It's up to the Space Dudes to Stop Them ! Play Across Many Maps and Game Modes to Win the Day !
Alien Shooter 2 Conscription$9.99
The Great War has begun! The world population capable of functioning is mobilized to serve in the army and the outcome depends on you!
Solar Wind$2.99
Blast your way through a galaxy of planets in this fast paced, side scrolling shoot 'em up. Fight in deep space, fly through asteroid belts, and battle across moons as you take on the alien menace.
Iron Soul$4.99
Discovery of a new Goldilocks planet has led to the creation of a new type of army: One that is made of metal and steel. One that can’t feel pain or fear. One that is said to be our only hope against a possible alien invasion.
Frozen State$11.99
Frozen State is a brutal, survival game set in a world embraced by the man-made ice age meant to protect mankind from pestilent hybrids. Bitter cold and numbing fear are the constant companions in the journey through the retro-futuristic Frozen State world.
Lil Tanks$4.99
A side-scrolling shooter with RPG elements that puts you in control of a prototype tank -- defending humanity from the alien scourge known as The Cuur!
Endless SkyFREE
Endless Sky is a 2D space trading and combat game inspired by the classic Escape Velocity series. Work your way up from a relatively wimpy shuttle, cargo ship, or fighter, to a highly upgraded and customized flagship or to a massive fleet of warships or freighters.
Freaking Meatbags$9.99
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.
Serious Sam 4$39.99
Serious Sam 4 reignites the classic FPS series in a high-powered prequel loaded with an explosive arsenal, intergalactic carnage, and perfectly timed one-liners.
MOTHERGUNSHIP$24.99
MOTHERGUNSHIP is a bullet-hell FPS where you craft your own guns, fight gigantic bosses, and defeat a robotic alien armada that conquered Earth. Face off against overwhelming odds in brutal, non-stop combats where thinking on your feet is the only way to survive.
M.A.C.E.$4.99
MACE is a classic space shoot ’em up, inspired by the legendary Amiga games of this genre. Handdrawn 2D graphics in HD resolutions, parallax scrolling, explosion effects and optimized games mechanics, combined with the proven gameplay are transporting the “Spirit of Amiga” in today’s Age.
Neon Tail$24.99
Neon Tail is an open world roller skating game where you follow a young girl’s adventures and save the streets of Bluepulse City from dimensional disaster.Get a jobs, go shopping, get Super Powers, fight a dimensional invasion, become a skating superstar, and drink bubble teas.
Slime-san: Blackbird's Kraken$3.99
The notorious Blackbird's kracked, I mean, cracked! He believes Slime-san stole his treasure and unleashed his giant Kraken upon him! Sound familiar? It is now up to Slime-san to escape the giant squid's jaws back out to freedom!
No Love LostFREE
Grab your ragtag crew & take up the Nectar Raiding trade on a dangerous planet that’s become all the rage! In this PvPvE extraction game for 1-10 players, compete against enemy crews to harvest as much Nectar as possible before night falls. But watch out, you're not the only one roaming this planet!
Strain Tactics$14.99
Strain Tactics is a real-time-with-pause tactical game, where you command a squad of soldiers to liberate earth from an alien infestation. Using your helibase, deploy your custom squad and provide air support. Remember to keep your crew sane and motivated while staying clear of alien contamination!
The Secret Ops 2$7.99
This TPS game was developed by an individual using UE5. The story is set several years after an alien invasion has taken over the world. You will play as a taciturn and ruthless agent tasked with completing missions and doing whatever it takes to eliminate hostile forces and their resources.
Project Starcrash$6.99
Use your powerful punches to defeat alien invaders in this side-scrolling action platformer.
Starcom: Unknown Space$24.99
Starcom: Unknown Space is an action RPG of space exploration and adventure. Build your own starship while discovering an epic story in a universe of strange mysteries, alien factions and uncharted worlds.