Top similar games like Shatterswarm:

2D space shooter and turret defense come together to create the Planetary Defense System this world needs! Shoot down asteroids and aliens and survive the bosses in this arcade like game featuring customizable satellites, projectiles, and upgradable Cannon and Planet Shield systems.

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!

Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense/real time strategy hybrid. Take on an enemy that learns from your moves and adjusts its own path. Do you have what it takes to persevere?

Build your defense base to repel alien invaders. Atahion is a strategy and tactical defense game in which you have to extract resources, build defense towers and use bonuses to complete the mission.

Mow down the alien hordes, scout for resources and survive. Dreadnought is a mix of Action Tower Defense Survival and Shoot 'Em Up Bullet Hell where you control the ships turrets & defend against waves of enemies. Choose your weapons, upgrade your ship & brace yourself, the horde is coming.

Defend the core from cosmic annihilation. Build massive orbital megastructures, summon heavy gunships, or physically grab meteors and crush alien swarms with your bare mouse. Deep progression, 4 game modes, and absolute chaos.

Space Menace is a sci-fi space RTS and battle game. You play as a space captain, seeking fortune and glory as you see fit. Leave your mark on the world and determine the fate of the galaxy with your decisions.

Acid Planet is a caustic blend of horde-survival, tower-defense and strategy. Build, fight and evolve to survive against rampaging swarms of monsters and fearsome Kaiju.

A real-time strategy combat game based on the world of the Line Of Defense. Command a team of four Galactic Command marines in highly classified missions in space and on planets.

Blast your way through waves of space debris in order to reach what is waiting for you on the other side. Find your fighting style with multiple unlockable ships in this fast paced space adventure!

Co-op twin-stick base building survival game.

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?

Defeat enemies and get parts! Build your own spaceship!

Atom Assault throws you into a chaotic Red vs Blue war where everything explodes, infantry fish for money, and you can even pilot nukes in first person. Full 3D, fully destructible world, fast, funny, proudly indie. If you miss old school RTS mayhem, this one hits hard.

Grey Galactic is a real time strategy game in space where you build up your planets and ships to conquer your enemies. Develop your empire and fleet of spaceships to destroy your enemies and take over the galaxy! Do you have what it takes to become the best Fleet Captain the UFMC has ever seen?

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.

Terminal squad: swarmites is a game with indirect control where you must erect a chain of buildings, which generate resources for construction or the combat units for destruction of an enemy.

The ULTIMATE tower defense onslaught is back. Bigger, deadlier, and more action-packed. Build autonomous defenses, deploy tactical drones, and unleash devastating support abilities in this epic, old-school RTS-inspired sci-fi adventure.

XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.

Battle Among Stars – Alien War Five Houses. One galaxy. You are the heir thrown into the war. Command fleets, assemble modular units, forge fragile alliances — every decision reshapes the balance of power. Free demo available now.

Control a fully armed Mech and fight through cyberpunk cities, military bases and industrial ruins. Capture and defend territories, build turrets and structures, and wage war against powerful enemies!

Scrap Bastion is a strategy tower defense game where you manage your city, equipping it to survive the waves of mutant creatures, testing your planning and decision making capacities at every turn. Watch out, as time is crucial to win!

Sci-fi rogue-like mining/tower defense game. Mine through a procedurally generated world to discover artifacts. Defend your spaceship from waves of enemies. Discover and spend resources to improve your mining and spaceships combat ability.

Halo: Spartan Assault brings the excitement of Halo combat to Steam for the very first time. Battle your way through 30 action-packed missions against the Covenant as you explore the origin of the Spartan Ops program featured in Halo 4. *DirectX feature level 10 required. *

A tower defense action roguelike where you control a single tower to fight against hordes of aliens coming from all directions. Pick your tower, equip up to 4 skills, and choose from a variety of traits and items to craft powerful builds that lead you to victory.

Command your ship in Conqueror Of The Galaxy, an intense roguelite survival and bullet hell game. Face relentless defenses as you conquer entire galaxies, overcoming swarms of enemies and choosing strategic upgrades to become the ultimate conqueror!

A new twist on the classic arcade shooter, with a variety of character choices and an upgrade system. Control your spaceship with your mouse & shoot with click - the only limitation is your hand speed! Face waves of creative enemy ships and stimulating bosses, and protect the ozone, Ozone Guardian.

Retreating ends here. Defend Bastion against evil hordes, reclaim lost powers, rebuild ancient ruins, and adapt your tactics to reverse the siege. Shape your playstyle in this hero-strategy rogue-lite solo or co-op up to 3 players.

Negative Energy is a tower defense game with basic RTS mechanics, where your goal is to defend the construction of a Dyson sphere, while fighting against waves of hundreds of enemies ships.

In Vermin Control, you will enter a thrilling sci-fi tower defense world filled with strategic combat and high tension. Operate a versatile unit capable of both melee combat and construction, deploy and manage 9 unique devices, and protect key facilities from relentless vermin assaults.

Gelluloid Domination is a fast-paced, strategic and tactical game where you grow a network of cells. Expand by assimilating nearby cells, fight off pathogens and develop nanoboosts in the lab. Other cells want to propagate their DNA too, so this won't be easy. Can your cells achieve domination?

A sci-fi roomscale VR Tower Defense game. Strategize to destroy waves of rogue robots and assist the powerful turrets with a handheld drone. Build and collect resources and help evacuate your crew from the alien planet.

Protect the base from an alien invasion. Place cannons and destroy the invaders. Upgrade cannons to resist the enemies.