Top similar games like Grimalkin: Solar Defense Force:
Grimalkin: Solar Defense Force $7.99
Command a Rag Tag fleet of Grimalkin Vessels against the evil from Beyond. Lead your Grimalkins to Victory or Suffer Ultimate Defeat and lose earth to the greatest evil known to Grimalkin-kind the Evil Ancient Space Faring Empire.
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Free At Last$6.99
Play as a robot that escapes from working at a rocket factory and explore your star system. Establish bases, research technology, farm, fish, fight, and so much more.
Cosmo Clash$2.99
Play as one of 4 trigger happy animals, in a primal duel for honor and glory! Bring your friends locally, or duke it out on Steam Remote Play! 2 to 4 Players can shoot, dash and bump their way to quick victory! You'll need speed, reflexes and viciousness to be KING of COSMO CLASH!
The Last Archwing$4.99
The Last Archwing is a fast paced, vertically scrolling space shooter. Will you and your friends take up the mantle as Earth's last defenders and thwart the plans of the evil Emperor Zarkhan?
Empires Of Creation$4.99
Take on the role of fleet commander and lead your empire to victory. Conquer enemies in high octane battles to upgrade your ships and gain credits for use on the galactic market. Exploit your relations with friends and foes to establish a monopoly over your corner of the universe.
Escort Commander$2.99
Escort Commander is an arcade space shooter blended with strategic and tactical gameplay elements. This is not another mindless shooter. Build your fleet. Outfit your colony. Upgrade your ship. Defend the last colony. Survive.
Space industrial empire$5.99
This is a idle game modeled on industrial building gameplay. It will be three-dimensional, complex industrial assembly line, easy, simple plane conveyor belt. At the same time to join the battleship assembly, space campaign, character development, giant construction, trade orders and other gameplay!
星际工业国：崛起FREE
This is a idle game modeled on industrial building gameplay. It will be three-dimensional, complex industrial assembly line, easy, simple plane conveyor belt. At the same time to join the battleship assembly, space campaign, character development, giant construction, trade orders and other gameplay!
Dominari Empires$4.99
Got 5-10 minutes? Annihilate your enemy in a lightning fast micro 4X/RTS game set in deep space. Gameplay relies heavily on strategy, forward-thinking, and twitch-like reflexes.
群星战纪: 最终防卫线 - STARS ERA: THE FINAL DEFENCE$0.99
We will be the last guardian of the planet, here will be our final line of defense. The Clyde Star Spaceguard will fight to the last moment.
Of Ships & Scoundrels$14.99
Of Ships & Scoundrels takes you on a journey to unknown lands that wait to be explored and conquered. As the commander of your fleet, you have to steer your battleships through a beautiful scenery of little islands, fight against enemies, friends - and forge dubious alliances.
ExocraftFREE
Design unique spaceships and build the ultimate space mining fleet as you team up to battle for resources and glory in this massively multiplayer action strategy set in an alien wasteland.
Starion Tactics$9.99
After assuming command of one of four human or alien factions vying for galactic dominance, immediately define your game’s scope. Play for minutes to hours across tens to hundreds of planets in single-player skirmish or multiplayer modes—it’s entirely up to you.
Dreadnought Sol$3.99
Fight through procedurally generated scenarios and unlock every ship. You are in the last Sol Defense Force's Dreadnought fighting for survival. Humanity has been flushed out of known space by alien resistance who oppose humanity's industrialized growth, it's your job to take it all back.
Star Command Galaxies$14.99
Take command in the ultimate starship simulator: Star Command Galaxies. Become a Captain, recruit your crew, customize and upgrade your starship, battle alien vessels, teleport to away missions and repel boarding invaders in this real-time strategy simulation adventure from indie studio Warballoon.
WOMG Lite versionFREE
Metroidvania + coding+ BOT's
Monstro: Battle TacticsFREE
Monstro takes the traditional tRPG gameplay and reconstructs it into a completely deterministic, logical experience with a twist of tactics. All of this is spiced up with ridiculous, tongue-in-cheek lore and approachable difficulty.
Orch Star$14.99
Orch Star is a real-time strategy game set in an immersive space universe where orchs and elves fight for domination. Crush your opponents as you lead a rebellion through the campaign, or challenge other players in online battles to conquer the galaxy.
Escape to SidiousFREE
After Earth's downfall, a new planet must now be colonized and defended against attackers. Explore new technologies and revive trade. Settlers, the future lies ahead. Follow me to a better world. May Iridium be with us!
TruckerX$7.99
Build and manage your own trucking empire in TruckerX. Plan and schedule cargo routes across the globe. Adjust routes in real-time to ensure efficiency and profitability as you expand your fleet and logistics hubs.
Euro Truck Simulator 2$19.99
Travel across Europe as king of the road, a trucker who delivers important cargo across impressive distances! With dozens of cities to explore, your endurance, skill and speed will all be pushed to their limits.
Smash MAGA! Trump Zombie Apocalypse: Twilight of EmpireFREE
Anti-fascist gamers fight the Trump Zombie plague in this spree of rioting and looting!
Blood and Gold: Caribbean!$19.99
'Blood & Gold: Caribbean!' is a blend of economic strategy and open-world RPG, set in the pirate era of XVII Century Caribbean. The game is based on the significantly improved Mount & Blade: Warband engine.
Interstellar Pilot 2$0.99
The hit mobile game Interstellar Pilot 2 has come to Steam. Join the TEF forces heading to the Gatopean sector to find a new home for mankind. Play how you like in this open world space-sim developed by Pixelfactor.
Gratuitous Space Battles$14.99
Who needs backstory? Who needs resource-gathering? Diplomacy is so last year. Gratuitous Space Battles cuts right to the chase of sci-fi strategy games, and deals with large, completely unjustified space battles between huge opposing space fleets.
A.R.M. PLANETARY PROSPECTORS EP1 Asteroid Resource Mining$4.99
During an expedition, prospectors discover an alien artifact inside an asteroid. Upon contact, they’re teleported to another realm. Captured and enslaved on a mining barge, they mine asteroids in mech suits, all while devising an escape plan to freedom.
Asteroid King$0.99
Fast pace shooter that has a story to tell. Upgrade weapons and kill bad guys is what this game is all about. The story will make you excited about each level and boss fight!!! Good Luck and Enjoy!
Mystical Maritime Adventure$8.99
Here, you can freely sail your ship, explore the endless ocean, and find hidden islands and treasures!
Bullet Hell ADVANCED$7.99
Early Access Game. An overarching turn based universal / solar system game featuring fleet to fleet combat engagements that also allow players to pilot a superfighter to inflict extra damage and call in fire missions on enemy ships. Roguelite dungeon crawler and 4 player multiplayer to be developed.
Acorns Above: A World Gone Nuts$4.99
You are a chipmunk pilot. Defend the universe! Take the fight to the enemy squirrels in the skies, space, and under the sea in this top down arcade shooter!
Star Valor$24.99
Choose your own destiny as you explore an open-world procedurally generated galaxy where anything is possible. Become a miner, a trader, a bounty hunter, a pirate, or perhaps a jack of all trades. Start off small and build your way to the top but remember with every action, comes consequences.
Centauri Sector$4.99
Centauri Sector is a top down tactical space combat game powered by a dynamic turn based campaign, rpg elements, fleet management and ground base combat.
The Far Frontier$2.99
The Far Frontier is a combination of two popular game genres: match 3 and strategy. While playing, two players fight using a shared match 3 area. They must use tactics and strategy to win.
Siege Island$4.99
Step into the world of Siege Island, a tribute to the classic arcade game "Rampart". Prepare yourself for an immersive 3D action-puzzle game that will test your strategic skills and reflexes. As the Orcish fleet draws near, the duty to safeguard your island from their assaults is yours.
Celestial Command$19.99
Mine asteroids, salvage space debris, design your own small or massive spacecraft using individual functional components, complete missions, and engage in battles against enemies in a vast galaxy with realistic physics based on orbital mechanics or in a classic physics mode.
WARSHIFT$9.99
Unique mix of Action, RTS and RPG gameplay elements that forms an innovative game genre. You can build base, manage troops, and then come down to keep your enemy at gunpoint in the dynamic battle and customize your main characters.
House of the Dying Sun$19.99
House of the Dying Sun is a tactical space shooter that puts you in the cockpit of the universe's most terrifying starfighter. Hunt the enemies of the Empire and bring ruin to their people.
Derelict Fleet$9.99
Derelict Fleet is a fast-paced, space combat game. You are tasked with defending a refugee fleet as you travel the stars searching for a new colony to call home.
Helium RainFREE
Trade your wares and eliminate the competition in a cutthroat world. Buy new ships and stations to mine and haul resources. Explore the vast emptiness of space.
Starlight Tactics™$9.99
Travel a hundred years into the future to command an advanced space fleet in full 3D turn-based tactical space combat through the greatest conflict humankind has ever known. Protect the Sky!
Lazy Galaxy 2$7.99
Lazy Galaxy 2 is an idle/clicker game with base-building and RTS elements. Lead an evil (albeit lazy) alien race to conquer the universe! Expand your base, fight vicious foes, and conquer the galaxies. Acquire combat experience and convert into candy, the most precious alien resource!
ASTRO: The Beginning$9.99
ASTRO: The Beginning is a dynamic side scrolling shoot 'em up about a close-knit space team caught in a clusterf*ck of epic proportions.Unravel the evil plans of your foes and secrets of world order while taking down various types of enemies and engaging in crazy boss battles.
Battleships and Carriers - WW2 Battleship Game$12.99
Search, move, destroy and build ships/subs/aircraft: casual turn-based naval strategy battleship game. More than 80 missions, Death-Match and Free Hunt scenarios and campaigns from Pearl Harbor and Lamansh to the Overlord and Okinawa battles, with over 50 ship and aircraft types.
Hasbro's BATTLESHIP$12.49
Hasbro's Battleship is the original strategic naval war game. Choose your Captain, position your ships, aim your missiles and sink the enemy's fleet! Face them in Classic mode, or step-up the stakes in the all new Commanders Mode. Ready, aim, FIRE!
Cosmic Resistance$7.99
You are the fleet commander. Different alien races invade the universe. Find and fight for saving scattered human colonies, integrate them in your ship fleet to help you create a powerful army that will liberate the universe and humankind from extinction.
Aerial GuardianFREE
Aerial Guardian is a large scale multiplayer battle first person shooter. Choose from several classes and play as a soldier to embroil yourself in a space fleet battle. Choose from a variety of over 20 weapons and several vehicles including mechs.
space vanguard$0.99
"space vanguard" is a plane shooting game with science fiction theme, which tells the story of an insignificant landing battle against stars. The player will act as a paratrooper and take part in this attack on the planet controlled by Winchester's military industry.
Drone Hunter VR$9.99
Are you prepared to defend the world against an alien invasion? Test your skills and reflexes in this highly immersive and intense game - Drone Hunter VR. You will be put through a series of tests to prove you are worthy to defend our planet using the top secret DH125, a hybrid alien/US weapon. Will you be the chosen one?
Aeon Command$2.99
Aeon Command is a tug of war strategy game, where you play as one of three unique factions to help gain dominance over the Aeon Nebula! Take control of your mother ship to gather resources, produce ships and fight off the enemy mother ship. Grow stronger as you progress through the 24 mission campaign and unlock new upgrades.
Merchants of Kaidan$14.99
Regain your riches, restore your honor and avenge your father's murder. A challenging trading game with lots of RPG elements.
Fingertips mountain sea$0.99
Fingertips mountain sea: everyone's heart longing for the peach garden
JUST A GAME$1.99
"Just a Game" is a sci-fi flying shooting game, you will control the robot protagonist zero and lead the partners in this exclusion of artificial intelligence in the world to survive, there are many camps in the game, you can choose to join them or one side.Build your fleet and fight the world.