Top similar games like Space Defense Grid:

Strategy, timing and fortune: Novel and immersive tower defense game experience!

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?

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

A 3D FPS/TPS Tower Defence game in a sci-fi world, defend your base from corrupted robots and unlock better turrets

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.

A classic single-player RTS set in a Solar System ruled by megacorporations. Journey from Mars all the way to Planet 9 and uncover the secrets of the BlackChain.

Taur is an action-strategy sci-fi game. Control the Prime Cannon and unlock all of its powerful weapons and abilities. Build turrets, droids, aircraft and more as you fight to protect the homeworld of the Tauron droids against a relentless invasion. Will your Taur stand against the Imperion warmachine?

Project Astra Dominium is a Tower Defense game with Basebuilding and Automation elements. Build up your base to become a supply hub for Earth's desperately needed materials, gather resources while defending against an unknown alien threat and improve your tower's and AI capabilities.

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!

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.

TEP the destroyer is a single player tower defense game where you will face alien monsters and ships in ground and space battles! Your strategy will decide the fate of your people in a sci-fi environment of varying difficulties!

The Last Starship is a space-based construction, industry & factory game, currently in Alpha (expect regular free updates). Design star ships and take on a variety of missions from mining and passenger rescue to combat whilst working on the greatest engineering project ever attempted by humankind!

A 3D-styled puzzle-solving burning brain indie game, using the Pocket Cube to restore objects. A story about AI's journey to recreate the history of human science

The day has come… Humanity has been attacked by an alien race.You have space bases at your disposal. Use them to launch battleships and take over the alien mothership.

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.

ViSP – Virtual Space Port is a creative building game for VR. Construct your own space port out of blocks and defend it against relentless enemies to fortify your space colony!

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.

Stop an endless hoard of crystal-type enemies, with different attributes, from reaching the portal to earth! You can build your own labyrinths, unlock new turrets, upgrade them, unlock abilities, and also gather permanent bonuses.

Be the ultimate CEO and military strategist in this genre fusion of strategy and business management. Create your own company, hire employees, research weapon technology, and take control of units on the battlefield to defend the moon against an alien invasion. Aliens down, profits up!

Players measure stamina with a never-ending stream of green creatures within the borders of a special military mission.

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.

Stand as humanity's shield against relentless waves of cosmic foes in this gripping sci-fi tower defense game. Employ advanced weaponry and deploy strategic defenses to repel enemy hordes across the galaxy's expanse. Can you withstand the onslaught in Galactic Frontiers?

Sci-fi colony management with a focus on expansion and exploration. Dig out the underground and explore the surface of an alien world as you rebuild your facility, grow your colony, manage colonists and robots and discover the mysteries of a new home light years from Earth.

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

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.

Mecharise is a strategy and tower defense game that combines elements of base building, resource management, and wave-based combat against hostile aliens. Pilot a mecha as you colonize new worlds and defend your base against enemy attacks.

An RTS base builder with constant production and minimal micromanagement, where you direct fleets of autonomous ships in huge battles. Features a singleplayer story campaign with 3 playable factions, plus a roguelike gamemode and level editor. Test your abilities in the shifting tides of the Spance.

Classic RTS gameplay fused with a modern roguelike. Shape your build each run by assembling an evolving arsenal of powerful units and facilities. Harvest resources, build out your base. Raise your army and call down powerful strikes to overcome the forces threatening your survival.

A Third-Person Tower Defense game in which you are an Intern sucked through a portal who now must defend the objective from aliens.

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!

Join our machine legion to conquer the world.

Build a space station. Command the tiny crew. Explore the galaxy. A meditative space strategy game.

Jump into the shoes of an interplanetary defender! Grab weapons, build towers, expand ground economics and protect planets from space invasions in this unique mix of twin-stick shooter, tower defense and city builder game.