Top similar games like Ad Astra: Sci-Fi Tower Defense:

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!

Command your forces from above or take direct control on the ground. Operative Division is an intense RTS-TPS hybrid set in a post-apocalyptic world. Manage finite resources, execute surgical tactical maneuvers, and unleash devastating superweapons in a battle for humanity's future.

TAVU is a PvE RTS game with a tactical combat system. Build your bases and defend them against waves of enemy attacks. Upgrade your units and destroy enemy bases to gain new territories and resources.

Build sprawling defensive networks of high-tech turrets and logistics systems to repel massive enemy swarms! Take direct control of your turrets and utilize powerful support powers to repel the invasion!

There is only one rule in the Wild West, the rule of the gun. Lead a fistful of Yankee soldiers on a mission to bring order to this chaotic frontier, facing desperados, robber barons, and more in a spaghetti western RTS adventure like no other.

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.

Build deadly mazes and outsmart a rogue AI in this strategic tower defense game. Adapt your defenses, use aiming parameters to your advantage, and activate powerful perks to survive increasingly complex waves of incoming robots.

RiftQuake combines base defense, real time strategy, action RPG combat roguelite where you help defend Princess Puffins and her Puffins gang from the forces of evil. Build base defenses, choose your attacks and spells, and collect loot to survive this comical survival where the environment changes.

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.

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!

Become the last guardian of the kingdom and defend the throne! Fight on the front lines with your sword, build barricades and towers between waves, and upgrade your hero. Throneguard: Last Stand is a 3D medieval action tower defense game.

Defend your base against relentless alien waves in a sci-fi tower defense strategy game. Build deadly kill zones, unlock new towers and special abilities, and adapt your loadout to survive escalating assaults across a hostile campaign.

Defend your cult from the police and military. Build shrines, raise followers, and prepare for the attack.

TD Tactics is a combination of Tower Defense and Auto Battler genres. Use your cards to cast spells, combine and upgrade towers, and make use of different synergies to defeat your enemies.

Sci-fi tower defense meets ARPG-like hero combat. Build towers then fight alongside them with your hero as you battle through a campaign to uncover the fate of a colonization effort on a distant planet.

Defend your planet from waves of robot invaders! Build powerful turrets, upgrade your defenses, and command robot units to fight drones, tanks, and massive bosses. Then send your own forces to attack the enemy planet in this action-packed sci-fi tower defense game.

Fast-paced space RTS with 10-25 minute matches. Command fleets, conquer systems, or research the Singularity. Simple controls, strategic depth, but no 3-hour commitments required.

Yãkoana: Dreams of Resistance is a strategy game with roguelite and tower defense elements. Defend your people’s legacy against colonizers, mastering the land and awakening ancient powers in a relentless fight for freedom.

A minimalist game about fighting for freedom and independence in the United States of America!

Annexation is a fast-paced real-time strategy game with old-school roots. Build bases, train armies, and outmaneuver your enemy to claim victory. Start by playing the campaign and then challenge yourself in Arcade Missions, which bring the intensity of multiplayer RTS into a single-player setting.

A survival RTS game where you defend your village against relentless waves of Norse mythological creatures. Build defenses, train warriors, and gather resources to survive as long as possible. If your Town Hall falls, it's game over. How long will you last?

A classic RTS featuring traditional base-building, resource-driven warfare, PvP, skirmish, and a powerful, easy-to-use Mission Editor. Build your base. Secure the ECO. Conquer the battlefield.

Scrappy TD is a steampunk tower defense game with co-op and PvP modes. Place towers, build mazes, and outsmart foes. Play solo or challenge your friends in several game modes.

Cyberwinter is an isometric action strategy game. On a distant planet with a harsh climate, you have to fight legions of dangerous monsters for a new home for humanity. Build bases, develop and defend them.

Star Pulse: The War is an independent real-time strategy game that merges science fiction with fantasy. Players will command a sci-fi faction, harnessing the power of star pulse to gather resources, construct buildings, train troops, and nurture heroes in the fight against invading magical forces.

Use projectile-based towers, unique tower interactions, and overpowered weapons to strategically conquer the endless waves in this 3rd-person tower defense game!

A strategic and action-packed base survival game where you mine crystals, build units, and defend your base against waves of UFOs. Defeat enemies, gather resources, and unlock new planets to expand your defenses. Are you ready to conquer the galaxy?

Build up your fortifications, place your cannons, and fire at the enemy forces! Improve your Battle Haven with powerful upgrades while playing through a story campaign comprised of dozens of scenarios with unique mission types and multiple boss fights! Take to the sky and win!

This is a sci-fi strategy game featuring a Defense Mode focused on tower defense and an Attack Mode focused on combat. The game includes over 30 different buildings and units, all of which can be upgraded through entry editing to enhance their performance and firepower.

A small scale base building strategy game for those of us who can't keep track of a million things anymore. Build, expand, and gather resources while holding off waves of enemy swarms.

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.

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?

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.

What if MOBAs and RTS games had a baby? Rover Wars combines resource management, farming, building and strategy into an intense tug of war. Fight in an interplanetary campaign and challenge your friends in the configurable Battle Mode. Rover Wars might be your gateway ticket into the strategy genre.