Top similar games like Planets Under Attack:
Planets Under Attack $11.99
Play as humans or robots in a brand new sci-fi strategy adventure! Travel into the far reaches of space, through cleverly designed star constellations and variable game modes, conquering enemy planets using 15 combinable technologies.
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Otherworldly Air Gunship$1.99
This is a fun shooting game that includes tower defense elements. You will control an air gunship equipped with three main types of weapons and several powerful special weapons. And leap your army to defeat thousands of monsters from other worlds.
WAKUSEI$4.99
Wakusei is a relaxing physics puzzle game about dropping and merging planets in a 360° environment.
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!
Kerbal Space Program$39.99
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
Holy Potatoes! We’re in Space?!$9.99
Holy Potatoes! We’re in Space?! is a whacky space exploration game where you manage your very own spaceship, craft hundreds of weapons, and explore the vastness of a veggie-filled universe.
Steel Rain$9.99
It's the ultimate, strategic SHMUP ReMix! Control TWO combat wings, flick between THREE different formations, and BLAST your way through overwhelming enemy fleets! Liberate planets, build colonies, research tech and skills, craft items, or even play 2p co-op in this unique new indie game.
Orbital Shipyards$9.99
Build, Explore, Fight. Build a ship of your imagination, explore the vast cosmos, and fight for your stake in the galaxy.
Idle ExpanseFREE
A sci-fi themed incremental game which allows you to expand your capitalistic empire across the galaxy! Hire mercenaries to pillage alien planets for resources, with the singular goal of making as much money as possible as quickly as possible! Totally not a playful commentary on real Terran society.
Spaceship Commander$9.99
Fight in space or on the planets, or just travel the universe. Visit cities and buildings, mine resources, trade with or speak to individuals on the planets. Explore and discover. Buy a new ship, fit upgrades, and hire a whole army of crew!
Galactic Simulator$4.99
Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective. The game supports multiplayer mode. Create a unique galaxy with friends!
GRAL$14.99
GRAL is a futuristic racing game with combat elements, a tribute to the 90s games such as Megarace, POD, DethKarz. Rides fast racing cars that spin 600Mph on articulated tracks with shortcuts, jumps, parabolic and death rides!
Hyperspacer$2.99
Travel through space in your own spaceship, land on planets and moons, talk to NPCs, perform various tasks, collect scientific data, gather minerals, acquire better equipment, upgrade your ship, advance your skills, and delve into the main storyline.
Final Upgrade$19.99
Help humanity to spread throughout the cosmos by exploring new worlds, building space factories and setting up trade routes. Research advanced technologies to increase efficiency and unlock new paths of development. Fight off other artificial intelligences in your goal to reach the Final Upgrade!
Space intruders alliance$8.99
Our planet's trading port is under attack by an alliance of raiders, defend the station and attack the intruders.
Stellarcraft$9.99
Stellarcraft is an exciting sci-fi tower defense game where you explore planets, gather resources, and fend off enemies—solo or in 4-player co-op. 🚀
Orbital GearFREE
Orbital Gear is a fast paced sidescroller shooter where you utilize the gravitation of celestial objects to give you momentum through space. Arm your Mech with two of the twelve different weapons and destroy your enemies.
Graceful Explosion Machine$12.99
Skillfully pilot the Graceful Explosion Machine, a fighter ship armed with a ludicrously overpowered quad-weapon array! Lost in deep space, you'll shoot, dash and combo your way through jewel-hued uncharted planets, fighting an alien armada to find a way home.
Broken Universe - Tower Defense$9.99
Get ready to rethink all your defense strategies! Build barricades to stop monsters, or lure them into a maze and attack. A variety of stages that change each time depending on how you play them.
Centrifugal$0.99
Navigate your rocket through the universe by using the centripetal and centrifugal forces! Wander around the stars and find your way home! Explore what's hidden at the end of the galaxy and have fun with your friends!
Stellar Empires$4.99
Indie strategy game where you take control of an Empire, lead it to complete domination by colonizing new planets! The goal of the game is simple - the player has an initial planet and he has to control the armies to capture the enemy planets.
StarDrive 2$29.99
StarDrive 2 is an exciting and evolutionary step forward for the StarDrive franchise. In this eagerly anticipated sequel, the core mechanics have evolved to incorporate a turn-based strategic layer, featuring spectacular realtime battles.
Between the Stars$29.99
Become the Captain of an interstellar cruiser and journey across the galaxy to save the Republic. During your journey you will have to make important decisions, improve the weaponry of your ship and fight against numerous enemies.
Horizon$29.99
Horizon is a turn-based space strategy game of galactic exploration and conquest in which you are in control of humanity’s destiny. You will explore deep space, find new frontiers and discover alien artifacts hidden on long-abandoned planets.
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.
Solar Struggle$5.99
Solar Struggle is an arcade space shooter with a thrilling story and a challenging skirmish mode.
Grow Up$9.99
Leaping from mind-boggling heights, bouncing off Champolines, soaring inches from floating islands, BUD can do it all - that look of mild terror, that’s his daredevil face. Help the adorable little robot collect MOM’s scattered ship parts and return them to the moon.
Scramble All Fighters$2.99
Amazing graphics. Countless different units. An addictive Battle Pass. We have none of those things. Just one carrier and as many tiny fighters as you can muster to hold back hordes of enemy fighters and bombers. Victory is not enough - you may win the battle, but still lose the war!
Planetary Annihilation: TITANS$29.99
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
PlanetariumVR$9.99
Planetarium for VR to learn about the stars, constellations, and deep sky objects from the Messier, Caldwell, Herschel400, NGC, IC, Sharpless, and Arp catalogs. Learn the positions of stars and the Messier objects; play the minesweeper in VR in a polyhedron.
Astro Colony$19.99
Explore endless Universe and create the most efficient constellation of colonies. Build conveyor systems to automate production. Take care of Astronauts and their needs! Establish new colonies as part of intergalactic simulation.
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!
Andromeda: Rebirth of HumanityFREE
Andromeda is a hybrid between a space 4X and an MMO for Android and PC. Get dropped into an online universe sandbox with 2 galaxies full of planets to colonize. Build structures like Mines to generate resources to build ships and engage in fleet battles with NPCs and other players.
Space Engineers 2$29.99
The ultimate space sandbox, reimagined. Unleash your creativity with powerful building tools, explore the mysterious Almagest system, and uncover its captivating story. Join the Early Access and shape the future of space engineering!
Gray Zone$19.99
Gray Zone is best described as Men of War meets Commandos in a futuristic coat. It's an odyssey of a slave who turned against his masters. Use stealth or direct combat in a squad-based encounters. Expect memorable characters, fun dialogues and lots of action!
Cube Universe$19.99
Cube Universe is a first-person voxel RPG. Visit many different, procedurally generated planets. Team up with your friends to fight against fierce enemies in dungeons. Do quests to save the world from the forces of evil - or throw it into chaos.
Signals$9.99
Signals is a casual planet hopper strategy game. Explore systems, harvest resources and repair alien devices. You’ll need to strategically work with the market to maximize your income while covering the cost of your operation in order to follow strange signals and discover what waits at the source.
RoboBunnies In Space!$3.99
Two robobunnies team up to transport a magic crystal safely through 50 action-packed levels, protecting it from danger lurking in the shadows. With hours of gameplay that is perfect to binge alone, with a friend, or 5 minutes at a time. How deep into space can you go?
Worbital$12.99
With the shifting gravity on your side, aim your cannons, blast your enemies and enjoy the fireworks. Worbital is a real-time strategic artillery game in space, peppered with a heavy dose of cosmic chaos. The goal: be the last civilization standing!
Space Engineers$19.99
Space Engineers is a sandbox game about engineering, construction, exploration and survival in space and on planets. Players build space ships, space stations, planetary outposts of various sizes and uses, pilot ships and travel through space to explore planets and gather resources to survive.
Super Trunko Go$8.99
Super Trunko Go is a challenging top down shooter that takes place in a thrilling space world. Navigate our hero Super Trunko, and help him restore peace back to the planet!
Galactic Ruler$19.99
Galactic Ruler offers real time strategy game play at both planetary level and in space! Lead your faction in diplomacy or conquest across a procedurally generated galactic map where any system might hold hostile enemies or resource riches. Develop advanced technologies to rule the galaxy!
Star Merchant$0.99
Star Merchant is a galactic trading sim where you become a space entrepreneur. Buy and sell items, fight pirates, upgrade your ship and try to meet your goal without going broke!
Planetary Control!$4.99
Invade strange worlds with alien armies! populate and shield your planets! Assassinate, Sabotage and Nuke your opponents! Collect victory points and achieve... PLANETARY CONTROL!
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.
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.
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.
Starsim$11.99
StarSim is a spaceship strategy RPG with live galaxy simulation. The game combines real-time with paused starship combat, turn-based crew combat, text quests and more. Be a hero, a trader, a scavenger, a mercenary or a pirate.
Iron Marines$14.99
Real-time strategy battles in amazing sci-fi worlds! Command brave soldiers, mighty mechas and powerful aliens to face the greatest challenges in hostile alien worlds. The galaxy needs you!
Starbound$14.99
You’ve fled your home, only to find yourself lost in space with a damaged ship. Your only option is to beam down to the planet below, repair your ship and set off to explore the universe...
Beyond the Chiron Gate$9.99
Explore an endless text-based universe filled with exotic planets, strange life forms, and ancient civilisations. Manage a crew of space explorers, upgrade their ship, and brave dangerous worlds to gather the data you need to reach the mysterious Gatebuilders.
Star Explorers$4.99
Planets, aliens, resources, upgrades, caves, mapping & documenting star systems ... seek a new home for the human race. An all-inclusive (admittedly janky) procedural space-sim made by solo developer Schmidt Workshops.