Top similar games like Save Our Solar System:

Employ lethal turrets, traps, and gadgets to defend against an onslaught of evolving creeps! Step into a twisted, hyper 3D, mind bending realm. Upgrade and adapt your defenses. Become a master maze crafter. Collect bizarre artifacts. Rush creeps for lucrative rewards, and succumb to greed!

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.

"SYNCHRONIZERS: Undead Marines" is a high-quality three-lane Tower Defense and Reverse Tower Defense game for a single player initially (and online coop in a near future) for Windows. This feels like the perfect mixture of StarCraft with Plants Vs. Zombies!

Faith & Shield: 4044 Tower Defense game, where you protect the human settlement from the incoming invaders, robots and other creatures, never seen before on our planet.

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..

Dracomaton is a top-down roguelike bullet hell about Eclipse, a small robot who awakens in an abandoned factory filled with corrupted training bots and the secrets of cosmic dragons. Fight your way to the top of the tower by transforming your robot body, changing your entire arsenal on the fly!

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!

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.

Defeat enemies and get parts! Build your own spaceship!

ElectraPlanet is a Multiplayer Adventure/Survival game. Exploring to find resources and later on, build an empire to protect and produce electricity as much as you can! With that electricity become the king of your planet!

Work together with your friends in this stressful 4-player couch co-op game as you defend against hordes of enemies trying to destroy your base. Manage both your time and your resources in an effort to balance all the needs of your base. Are you and your friends up for the task?

Apeiron is a Tower Defense with an epic and exciting story. Defeat enemies and bosses with your own strategy. Upgrade your abilities and improve towers. Accept the challenge and adventure through many interesting levels and explore the wondrous game world.

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?

Cyber Tower is a tower defense game that focuses on grid movement and path construction. Tailor your defense based on both the type of towers you choose and the paths you construct. Prevent waves of virus-infected autonomous vehicles from invading your city!

Engineered to Purpose is a new tower defence game where you custom-design towers to defend your base, with millions of builds to explore and refine. Set in the far future, E2P's story of posthumanism, family, and change will open new worlds to explore and survive.

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!

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.

With a style inspired by the RTS games from early 2000's, a new tower defense combines in a unique way action, tactics, replay value and fun. They are here! Choose your targets, upgrade, replay, discover your enemies and your tactical skills.

"Galactic Defense: Automation" is a real-time strategy game that emphasizes unit behavior automation. All units run their own cycles: production, development, death, and recycling. Players design construction plans to defend and destroy enemies.

It’s defense time! Arrange your forces against the invading Robotic tribe called the Kaids. Choose your arsenal and place them wisely for excellent road defense. Prove your defenses against challenging enemies.

Shoot' Em Up, Vertical Fast & Fun !The Overdriven Ship is back :More better, more intense, and more beautiful !

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

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!

Tower-defense mixed with economy elements. It features complex skill trees, resource trading, building your own village, and setting individual tactics for each tower. Can you defend what you've built from hordes of enemies? Visit Ancient Islands and test your tactical sense!

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!

Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is a FTD game - FPS, Base Building, Tower Defense and much more all at the same time.

Tower Tactics Arena is an action roguelite set in the Tower Tactics: Liberation universe in which you'll fight intense waves of enemies in a closed combat arena! Level up your towers strategically and collect powerful trinkets and potions! Will you claim victory in the arena?

Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense game. Fight increasingly difficult hordes of aliens as you adapt to challenging new battlefields designed to test the most strategic mind. Do you have what it takes to persevere?

Everwarder is a 2D roguelite tower defense. Protect the crystal against expanding darkness and enemies that emerge from it. Explore procedurally generated worlds and keep up with constantly rising difficulty by acquiring powerful artifacts, evolve units, progress in upgrade tree and more.

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

Stellar Initiative is a roguelike tower defense game where you land on the planet and use your orbit ship to deliver buildings and support you with fire. Complete missions, install new upgrades, discover powerful artefacts and find the best strategy!

"Relic Guardian" is a fantasy style strategy tower defense game. As the builder on the battlefield, summon a variety of defense towers and spells with reliable hero companions to complete this epic and guarding adventure!