Top similar games like Cosmic Invasion:
Cosmic Invasion $4.99
Cosmic Invasion is a combination of strategy mixed in with quick frantic battles against fleets that contain many ships. The strategic layer is a 20 X 30 grid with 600 sectors. Move your ships around to protect your home planet and space stations from the invading fleets of UFO ships.
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Chaos Galaxy$14.99
A pixel-art turn-based Galaxy total war game. You can select 14 factions, 61 heroes, hundreds of warships and mecha, and command multiple fleets to carry out grand strategic operations on the map of the galaxy.
Starfighter Neon$0.99
You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.
Quasimorph$19.99
Take on a role of a hardened PMC fighter in a dark turn-based extraction RPG. Engage in unforgiving combat, manage your ship and pile up the bodies of your clones to unravel the dark mystery behind threat to all life.
Entity OnboardFREE
In this sci-fi survival horror game, you'll use tools such as a flashlight and tape recorder to survive while a mysterious entity chases you. Hide in the light and don't let it touch you. Power up each floor to escape!
Where is Earth?$6.99
Where is Earth is a top-down vehicular combat game. Traverse planets, evading threats and obstacles, in search of your crew. Gather resources to assemble upgrades, landing vehicles, space craft, weaponry and support modules to aid you in your fight against an unknown enemy.
Planetary Defense: An Orbital Turret Defense System$1.99
2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.
Tactical Troops: Anthracite Shift$14.99
Dive into a top-down, turn-based strategy game with 80's sci-fi flair. Command elite soldiers in multiplayer duels on 24 maps, local hot-seat mode, or a thrilling singleplayer campaign. Master teleportation and gridless movement on the mysterious planet Anthracite.
The Legends in Kylamar$7.99
The Legends in Kylamar is an action, thrilling turn-based RPG that will immerse the player in a world filled with enemies, surprises, and more importantly, memories!
Mission Andromeda$1.99
Escape from Earth! Navigate procedurally generated levels using your trusty Jetpack and Laser rifle, gather precious Ores to trade and Biomass to fuel your ship "Mole-1" on it's way to the final destination, Andromeda!
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.
Survive Planet YubglubFREE
Survive Planet Yubglub is a survival rouge-lite, where Earth Representatives must hurl dodgeballs while evading toxic slime aliens and their lethal projectiles. The Earth Reps. must carefully navigate through the harsh environment of planet Yubglub. Choose your character, and Survive Planet Yubglub!
Detritus$8.99
A chaotic Local & Online Multiplayer 2D Shooter featuring 4 game modes, 10+ maps, dozens of weapons, customisation options and more. Play Online with up to 8 players in a lobby, prove your strength by being the last man standing in this relentless shooter.
Pulse JumperFREE
Pulse Jumper is a Precision-Platformer where you can jump with guns!
Xenonauts$24.99
Xenonauts is a strategy game in which you control a multi-national military organisation defending a Cold War-era Earth from alien invasion, using small squads of persistent soldiers to eliminate the extraterrestrials and recover their technology in turn-based ground combat.
Biolab Wars$4.99
Inspired by the 8-bit games and by the movies from the 80's, your goal is to blow things up, defeat aliens and fight bizarre bosses in this platformer 2D with classic mechanics.
Invasion: Neo Earth$8.99
Retro turn-based strategy in a sci-fi world of sinister alien invaders. Take command of troops, tanks and aircraft as you position your units for the perfect strike or unbreakable defense. Plot the course of humanity's war against the insidious Sectyd by choosing which missions to fight.
STARR RINGER$9.99
Grab the fate of all life in your hands. Blast your way through the cosmos, destroying monstrous cosmic beasts and the space cultists summoning them, on your path to stopping your mother from unleashing the chaos realm upon the universe, in this sci-fi cosmic horror bullet-hell, STARR RINGER.
Bionic Battle Mutants$4.99
Bionic Battle Mutants is an indie old school turnbased tactical game. Where you can build your own team of cyberneticly enhanced super mutants. Fighting your way through the Deathzone of the outlaw planet Cerberus 7.
Lighark$5.99
Lighark is a top-down action-adventure game where the protagonist pilots a spaceship, traversing through various wondrous planets and engaging in a revenge battle against the three factions of the galaxy. However, all of this is part of a larger conspiracy.
Switch 'N' Shoot$3.99
Endless arcade action with just ONE button - Switch directions whenever you shoot!
Steam Marines$19.99
Steam Marines is a squad based Roguelike set on a steampunk spaceship. It features tactical play focused on positioning and careful use of resources. Built to keep you on your toes as you progress through the decks of your besieged ship while clearing enemies and trying to reach each level's elevator.
Atomic Guardians$4.99
ATOMIC GUARDIANS is a fully CO-OP arcade retro shoot 'em up, where one player flies the ship, and the other player mans the shields. Fight your way through a never ending horde of Brutal Bosses, Alien Monsters and Gigantic Asteroids as you rack up a new world-wide high score. Play with up to three friends, and see how long you can last!
Star Hunter DX$9.99
Betrayed by her cut-throat crew, Luna Starr - former Space Pirate Captain turned bounty hunter - has a score to settle. As Luna, travel to 5 exotic planets to track down your mutinous mates, and face them in Bullet Hell dogfights to the death!
Space Captain McCallery - Episode 3: The Weaponmaster's Challenge$4.99
Captain McCallery voyages to a planet of prehistoric monsters in search of a reclusive Weaponmaster.
Powernaut VANGARDT$0.99
Fight for your life in this state-of-the-art 8-bit platformer!
Beyond Galaxyland$14.99
Beyond Galaxyland is a thrilling adventure-RPG combining cosmic exploration, strategic turn-based combat, and epic boss battle events across a vast solar system. Join Doug and his gun-toting guinea pig on an exhilarating quest to save Earth, itself.
Call Of The Mighty Warriors$4.99
Two kingdoms in battle against each other, the king Bennevert called for the legendary mighty mercenaries to defend strategic posts in dangerous lands in the battlefield. Are you prepared to be a mercenary?
Chaos Sector 混沌宙域$9.99
It's a retro-style strategy game, you can choose the Northsky Fleet or the Pirates, lead your commanders, controll many kinds of warships and robots, and fight a war with the enemy's fleet and alien horde on the galactic chessboard!
JETBOY$5.99
Jetboy is a retro supercharged jetpacking pixel shooter with a pumping metal soundtrack.
Blaster Master Zero 3$14.99
The Pinnacle of Mutant Blasting Action Is Here! — Blaster Master Zero 3's hybrid of sidescrolling and top-down action is back for its 3rd chapter, and more intense than ever before!
Time Knight Adventures$4.99
A single screen retro platformer with a ticking clock, large maps to explore, upgrades to find and lots of secrets.
EOS 27FREE
EOS 27 is a 2D, strategic action-platformer in which you overtake your enemies through both careful planning and tight fighting. Carefully design an arena tailored to your enemy, then put it to the test in an epic, fast-paced fight for the sake of humankind.
The Abandoned Planet$14.99
A throw-back, retro-inspired, point and click adventure with chunky and beautiful pixel art
StarCore Legacy$4.99
Remake to 2016's Legends of the Universe - StarCore, a Metroidvania style Action-Platformer with several abilities, enemies and areas to explore.
UFO No!$0.99
What would you do in a UFO invasion? How about spacejack a UFO and use their technology against them! Use Space Age power-ups on these uninvited guests to show them who's boss. So go ahead and suck them into a black hole, or just nuke 'em to send them back to the Stone Age!
Starwulf$2.99
Dive into Starwulf's unique blend of brick puzzles and space shooter action. Explore diverse planets and star systems, unlock special missions, and upgrade your ship. Can you save your home planet? Casual subgames, included to the demo version, offer endless fun.
Stellar Bewitching (Remastered)FREE
Find your destiny and your boyfriend in the Limbo Realm. Play as a teenage farian witch named Elya Seres, looking for a boyfriend for Venusia's day so she can remain one of the cool kids. Venture into the Limbo Realm with her slime-familiar Floryn in this turn-based Sci-Fi RPG.
SPACE DANCE$0.99
Space Dance is a 90s-inspired space simulator where you defend Earth from alien invaders. Choose from three weapon types, face challenging battles, and upgrade your ship to compete for the highest score. Get ready for an intense space adventure!
Astro Raid$4.99
Fly around, mine resources, expand your ship, build weapons and fight off aliens!
That's My Space$4.99
The universe is yours to conquer in That's My Space. Gather resources, craft powerful weapons, upgrade your spaceship and battle against enemy nations to become the ultimate space explorer.
RAM PressureFREE
Tactical story-driven online multiplayer game combining the turn-based combat of X-COM with a deep, well-grounded sci-fi setting. Experience intense tactical online multiplayer action and explore a deep plot and unique storyline built on both single-player and multiplayer missions.
Operator8$14.99
An unparalleled alien invasion has overwhelmed the Mining Block Facility on the moon Triton, leaving only death and horror in its wake. You are a mercenary known as Operator8 and you alone have been called in to bring a stop to this fierce attack. Destroy the hive mind at all costs!
INVASION$0.99
INVASION - is the simplest 3D shooter with surviving elements in which you must survive on an unknown planet.
Special TacticsFREE
ST brings the most intense, tactical-action experience to Steam. Select your custom loadout, plan out strategies and accomplish your objectives. Addictive Survival mode and unrivaled multiplayer including Squads (1 vs 1, 2 vs 2, 2 vs 1)
Kaiju Wars$19.99
Play out a Kaiju movie as the (hopelessly) outclassed military in this stylish 2D turn-based strategy game. Construct buildings and defend your city with cannon-fodder tanks, jets and more as the devastating kaiju grow in power with every attack.
Dead Metal$14.99
1-4 player co op roguelike with turn based combat and an emphasis on exploring randomly generated dungeons in order to find loot and complete missions
Perilous Warp$14.99
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!
战棋英雄$4.99
This is a continent ravaged by war and scarred by the constant invasion of other worlds. Players will play as a young prince who eventually grows into an invincible leader after countless battles.
The Hero of Bangaona$4.99
The Hero of Bangaona is a 2D Side-scrolling Action game where you play as the Hero of Bangaona kingdom whose mission is to capture the enemy bases in order to rescue the Princess who got kidnapped by the soldiers of the Weins Territory.
Spaceport Hope$1.99
A huge hand-crafted world packed with 13 unique bosses, a gripping story, and tons of enemies, Spaceport Hope is the ultimate test of gaming prowess.
Planetstar Warrior$1.99
Planetstar Warrior is a horizontal scroll-space shooter with numerous powerups and a gradually increasing level of difficulty. Defeat all enemies on each level to progress.