Top similar games like Planetoid:

Hostile Mars is a Factory-Building game focused on Combat! Explore an open world and discover new tech, unlocking powerful weapons and structures. Create efficient supply chains using delivery bots. Salvage destroyed enemies for resources. Design your base to withstand increasing waves of enemies!

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.

Space debris is out of control! Craft a station to take out the trash in this construction roguelite mashup.

Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.

Manage your very own space station in this Tycoon game. Sell fuel and repairs to the visitors. Manufacture and research new ways to defend your business and make more money while balancing your relations towards other factions. Survive against all odds.

Dive into Astronaut Assault, a third-person Sci-Fi tower defense game, and battle against relentless enemy waves in diverse arena settings. Arm yourself with an array of turrets, traps, and gadgets to halt, hinder, and outmaneuver your foes.

Hostile Mars is a factory-building game focused on combat! Explore an open world and discover new tech to unlock powerful weapons and structures. Create efficient supply chains using delivery bots. Salvage destroyed enemies for resources. Design your base to withstand increasing waves of enemies!

A sci-fi action strategy tower defense digging 2D top down game, Dig, explore, build production and defensive facilities, take care of robot's battery and manage power wisely..

IT HAS GONE ROGUE You are sent to an hostile Space-Station with the mission to stop an AI-Super-Computer that has gone rogue!

You are deployed to the desolate red planet to reforge humanity's hope. With no hospitable atmosphere, no nurturing water sources, only relentless storms, unknown alien creatures, you must use wit and determination to survive on this alien land and build a Mars base of your own.

Geometry Defense: Infinite is a classic infinite tower defense game where you must build a maze to slow enemies and build towers to destroy them. An action-packed and engaging game requiring focus to take on challenges and test your skill.

Eden Star is a fast paced Sci-Fi survival game that blends unique physics based combat, destructible environments and free-form construction with the exploration of a hostile alien world.

The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.

Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?

The Creeper, an unstoppable alien force, has returned, devouring thousands of worlds. Your mission: take back these worlds from the Creeper. Battle against the Creeper fluid, sand, particles, and more in a groundbreaking pixel-level simulation that pushes real-time strategy into uncharted territory.

Take control of the hive and protect it from enemies. Build factories and defence, research technologies and, if necessary, use nuclear weapons, but do not let the enemies harm the queen!

Crash land on a hostile planet where you'll have to build the strongest defenses if you wish to live to escape from it. But be warned... this planet is merciless. Build strong, and smart; else physics may flood or destroy your only hopes of survival.

Build walls, turrets and summon allies to survive hordes of enemies in this top-down sandbox base builder.

Siege the Day is a tactical real-time combat castle builder game. Take control of your castle's defenses and fortifications. Engage in epic 1-on-1 battles! Build your ultimate castle and use catapults, cannons, magic spells, and dragons to wage war against other players.

Artificial intelligence has plotted a path to a sustainable future, but humans aren't included. Defend humanity against the A.I. in this instant action real-time strategy, tower defense hybrid.

An idle survival game with tower defense mechanics. Build your own perfect defese and face infinite waves of enemies!

Automate, Defend, Repeat: A combination of factory management and tower defense strategy. Build a planet-dominating factory, defend it from disgruntled resource-carrying monsters, and defeat a total of 6 bosses. Once you have done that, select a New Game + modifier and do it again!

Build your own cardboard fort and defend it against swarms of enemies. Gather resources, craft weapons and set traps. Be creative, improvise and experiment to win.

Build your world and defenses in this unique and dynamic VR action-survival building game. Players can choose to casually build and save their own worlds or fight waves of robots in their world or in one of the unique environments. Players can utilize blocks and weapons to fight off waves of robots.

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.

Refactor is a hard-core tower defense game that combines modular building, route planning, and element composition.

A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!

Electromaze Defense is a classic tower defense game where you create your own maze. With a wide variety of maps, towers and upgrades, Electromaze Defense will keep you hooked for hours on end! Can you build the perfect maze?

Ever wanted to beat a T-Rex up with a chancla, while building powerful towers that shoot piñatas, hot sauce and heat-seeking fireworks? Captain ToonHead is the VR tower defense game of your cartooniest dreams.

Defend entire planets against hostile invaders in this full 3D tower defense game. Manage resources and space while constructing weapons, defenses, and structures to withstand the destructive onslaught across multiple planets.

Design the perfect defence system for the city in this physics-based game. Stop the falling celestial objects with turrets, fire, lightning, portals and more! 60+ levels that will challenge your ingenuity and creativity.

Star Trek: Prelude is a space-based game that builds defense towers on earth to defend against alien invaders called Black Ember.

Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.

Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship. Stranded on an unknown planet, you must gather resources, repair the ship, and defend against alien monsters to survive and escape.

Co-op twin-stick base building survival game.

A Roguelike Tower Defense in space with missions to conquer. Can you hold against the spreading alien bosses? Build and upgrade towers against the corruption. Choose your technologies and warpspeed your way to victory.