Top similar games like Spoids:
Spoids $4.99
Spoids is a challenging throwback to the original brand of tower defense games. Command the Remote Defense Space Station and respond to distress calls of those who are being attacked by the invaders. Travel from planet to planet using your powerful arsenal to hold back the Spoids.
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Planet Barren Objective$2.99
Fight, upgrade, explore, and build your way out of a dangerous planet in this 2D pixel art side scroller. Stream of foes will keep you on your toes while beating them will reward you with much needed resources.
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.
飞跃星球（Eggy Space）$1.99
A light tower defense game with unique planet exploration. Defend against aliens, collect resources, and build a new home. Exquisite graphics and challenges await!
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. 🚀
Stellar Commanders$8.99
Conquer the stars in this straightforward multiplayer real-time strategy game from the creators of First Strike and become a Stellar Commander!
Interplanetary: Enhanced Edition$14.99
In this turn-based strategic artillery game, players wage interplanetary wars by developing their home planets and firing massive barrages through the unpredictable gravity fields of the solar system.
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.
Cat Guardian$7.99
Cat Guardian is a flexible card game blending tower defense and survival. Manage resources, build, and strategize to protect the Tree of Hope from zombies. Can the cats of Meowx Planet succeed in their mission and survive? It’s up to you!
Hills Of Glory 3D$4.99
Lose yourself in Hills of Glory 3D, a WW2 reverse tower defense game with stunning 3D graphics. In this war game, defend your bunker against hordes of enemies with the military arsenal at your disposal. Rifle, mortar, flamethrower, air strikes… don’t hold back!
Defense Task Force - Sci Fi Tower Defense$2.99
Defense Task Force Featuring Large Scale Procedurally Generated Tower Defense Battles with FPS Quality Visuals and Infinite Waves. 10 tower types, with different attacks , 3 levels plus boosts. 25 Enemy alien species: Regulars, Swarmers, Racers, Cloakers, Healers, Boss Units and Spawners.
Protolife$11.99
Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.
MarZ: Tactical Base Defense$21.99
Build your defense base to fight back the undead hordes of Mars and secure the future of the red planet. MarZ is a game of strategy and tactical defense where you must carefully manage your crew and resources as you try to uncover the terrible secrets of the undead.
Asylamba: Influence$5.99
Making your culture shine is often more effective than taking out weapons!
_OUR_:_Defense 2021$4.99
Is a dynamic tower defense game. You must react and counterattack the enemies on the battlefield all the time. Fight off alien swarm attacks with gigantic machine guns, shotguns, gauss rifles and even a giant laser created using alien technology.
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.
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.
Stop Them All$2.99
A minimalist sci-fi tower defense. Buy soldiers and upgrade them, defeat waves of enemies, hold your lines.
Ancient Planet Tower Defense$4.99
Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders. Use powerful technologies of the Ancient and repel the attack of the enemy's armies!
Nexus Defenders$4.99
Tower Defense meets a Visual Novel narrative. Place an arsenal of towers to halt the invading enemy. Use special abilities such as napalm strikes, EMP blasts, and orbital lasers. A sci-fi space drama, filled with dialogue choices.
Candy Disaster - Tower Defense$13.99
Candy Disaster is 3D trap-style tower defense game where you guard candies against alien thieves! Unlock powerful and clever traps, choose your arsenal for different bases, and find the deadliest trap combination - then watch those space goons walk into their death!
Planet Stronghold: Colonial Defense$19.99
PSCD is a sci-fi collectible card game (with over 120 unique cards) mixed with visual novel gameplay. Features beautiful hand painted art, romance for all tastes, adjustable difficulty. Play as male or female protagonist.
Maia$24.99
Maia is a colony building game set in the not-so-distant future. Your colonists make planetfall on a hostile world and you must ensure their survival and their safety, constructing their off-world habitat from almost nothing and sheltering them from a dangerous, often deadly environment.
The Pair Annihilation$9.99
'The Pair Annihilation' is grid + turn-based strategy roguelike game. Use different combinations of ships, different artifacts, in battles on various battlefields to defeat Udtmos!
Farm DefenseFREE
Farm Defense pits you against waves of increasingly difficult enemies in a Tower Defense environment. Mitigate the random elements to defend the farm. Conquer all 40 waves to live and fight another day.
Tochos vs. BrokensFREE
The Brokens are invading and only you can save the planet, use your Tochos and defeat the evil forces in this strategic tower defense game.
Star Defence$0.99
Star Defence is a unit-placement real-time tower defense game in which you can place any unit you like on a 2D free-form plane. All units in the game, including enemies, are composed of units you place. Place your units in a balance between enemies and allies to develop your civilization.
StellarDefender$1.99
Search for the scattered items within the planet to prevent a planetary collision.Let's search for supplies scattered across the planet, build a foundation, and launch a compressed-power missile to eliminate other planets that threaten the Delta planet.
Project HasturFREE
Defend humanity against the ever changing threat of the alien Proteans. Project Hastur combines elements of 3D tower defense and real-time strategy with models of biological evolution to create a uniquely challenging experience.
Bionic Attack$14.99
Bionic Attack is a fast paced Real Time Strategy game set in a post apocalyptic world, where two factions are fighting for the planet domination. During the campaign or fight mode, you will play both factions, each one has a special unit with a unique gameplay.
Invader TD$2.99
Invader TD is a side scroller tower defense, where the player is in the role of an alien race with the purpose of infecting and dominating the earth, you must protect yourself from the attacks of the humans, who are trying to destroy you.
Nightside$4.99
A four races sci-fi base building real time strategy game set on the dark side of an unknown planet where the valuable "green ice" resource can be found.
Nexus - The Jupiter Incident$9.99
Ambitious megacorporations monopolize the conquest of space and the colonization of the solar system. At the very edge of the solar system, the companies make a discovery that will shift the technological advantage and upset the balance. And so a new conflict is born: "The Jupiter Incident."
Oil RushFREE
Oil Rush is a naval strategy game that takes place in a world where nuclear war has melted the ice caps, changing the face of the planet forever. Oil Rush offers unique gameplay, avoiding micromanagement of every single unit, while still providing full control over all important aspects of strategy and economy.
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!
Zotrix - Solar Division$14.99
The battle against Zotrix aliens is getting closer to your door step. Every space station in the network is in danger and Solar Division command needs your help to setup proper strategy for the defense. You are trusted this important task before whole network is taken to the edge of the unknown.
House of Cards: TD$2.99
A game where you must defend against robots that came from the future and want to destroy all of humanity. You must use various strategies and characters to survive this time-traveling adventure! Are you ready to join this adventure?
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.
Hormone Wars - Tower Defense$9.99
Do you like Tower Defense games with Strategy elements? Well, look no further! We've got exactly what you're looking for! Get ready to defend your settlement from enemies using a huge arsenal of towers!
Catyph: The Kunci Experiment$9.99
CATYPH is a First Person Adventure game (Myst-like), part of a sci-fi series named The Black Cube (ASA: A Space Adventure...). Visit Tytaah, a moon of Catyph divided into 7 regions, and try to save your home planet Terra by solving the challenging puzzles of the mysterious Germinal.
Meridian: New World$6.99
Slip into the role of Daniel Hanson, commander of the first mission to a remote planet called Meridian. Assured of the fact that the planet is uninhabited, the unexpected reception of a distress call from the surface could mean many things, none of which you are prepared for.
Project VTS$4.99
Project VTS is a real-time TD game. You'll need to build your defence around your base and defend against different enemies from all directions in various terrains of the alien planet.Use your turrets, obstacles, power supply, resource facillities to defend your base.
Vestiges: Fallen Tribes$14.99
As head of your clan, face opposite tribes in strategic solo missions and PvP battles. Build and improve your deck of cards, make the right tactical choices, and place your soldiers on the battlefield so that they destroy the enemy. Can you lead your people to victory?
Stellarcraft The PrologueFREE
Stellarcraft is a thrilling sci-fi tower defense game that delves deep into the vastness of the universe and offers players the opportunity to explore planets, collect resources and defend themselves against numerous threats.
Planet SFREE
Planet S is a real-time strategy game where your goal is to colonize multiple planets in a solar system to advance your civilization, build a city and supply it to grow your faction.
Deep Sky Derelicts$19.99
Deep Sky Derelicts is an original combination of turn-based strategy and RPG, enriched with tactical card combat and popular roguelike elements. Explore derelict alien ships, fight, loot and upgrade your gear, all in distinctive retro-futuristic comic book aesthetic style.
Warstone TD$14.99
Warstone is a Tower Defense game, with RPG, Strategy, and even city building elements. Detailed Hi-res graphics and beautiful illustrations combine with a deep storyline to draw you into the world.
StarDrive$29.99
As a space bear, human or any other race, venture forth into the galaxy, create custom ships, conquer new worlds, build new colonies and defend your very existence against those who would take what is yours.
ADAPTR$14.99
Build physics-based vehicles from a range of modular blocks, solve puzzles to move down from orbit, across the Earth's surface and deep into the lost labs. Locate missing robots, explore secret areas and unlock the secrets of a long-lost civilisation.
Alien Planet Survival$7.99
You drift in space, land on a random planet, collect materials, survive, develop civilization technology, conquer more planets, idle automation factory game
PlanetFate$3.99
Defend your planet against aliens and asteroids in this room-scale VR game. Set mines, position orbital laser and torpedo defense units and watch out for threats from any direction. Do you have what it takes to prevent the destruction of your planet?
5Leaps (Space Tower Defense)FREE
5Leaps is a retro-futuristic strategy game "Tower Defense" style.