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Games Like Ad Astra: Sci-Fi Tower Defense

60+ similar titles based on shared tags and player behavior. Themes include Strategy, Action RTS, Tower Defense, Base Building.

Ad Astra: Sci-Fi Tower Defense header art

Lose yourself in an indie solo-dev. treasure that harkens back to arcade classics! All while thumping along to killer retro-inspired beats by Ovani sound. Embark on an epic tower defense adventure against awe-inspiring machine monstrosities, made by a devoted gamer for devoted gamers.

Reviews: 7 user reviews — 57% — of 7 reviews
Released: 2024-12-20
Developer: Azure Moon Games Ltd.
Genres: Action, Casual, Indie, Strategy
Platforms: Windows

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  1. #1 Littlest Catalyst: Swarm Defense
    97% matchNo user reviews2026
    Dev: LittlestGameDev
    Windows · Mac · Linux

    Command a crew of tiny bots, build a modular space base, and repel relentless alien swarms. Build, upgrade, defend, but don't stay too long, the hive is closing in.

    Why similar: Action RTS 31.7% ★, RTS 17.3%, Tower Defense 15.8%, Base Building 13.8%, Strategy 9%

  2. #2 Neocon Tower Defence 3
    96% match7 user reviews86% of 7 reviews2024
    Dev: Dincicode
    Windows

    A finger-blisteringly action-packed Tower Defence advanture!

    Why similar: Action RTS 36.5% ★, Tower Defense 24%, Base Building 13.7%, Resource Management 8.8%, Futuristic 7.2%

  3. #3 Atahion - Tower Defense
    96% matchNo user reviews2027
    Dev: EhtChaos
    Windows

    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.

    Why similar: Tower Defense 26.5%, RTS 23.9%, Base Building 16.2%, Action RTS 13.5% ★, Sci-fi 7.7%

  4. #4 Minion Slayer
    95% match8 user reviews88% of 8 reviews2022
    Dev: TansanGames
    Windows

    Prevent the invasion of the minions that stimulate the desire for challenge and prove that you are a slayer physically and mentally.

    Why similar: Action RTS 33.5% ★, Tower Defense 25.5%, RTS 22.4%, Strategy 8.9%, Base Building 8%

  5. #5 Hobgoblins Against Dwarfs
    94% matchNo user reviews
    Dev: Enigma Empire Entertainment
    Windows

    Craft an unstoppable defence using Dwarven Towers and a fearless squad, then take on waves of invading Hobgoblins in this thrilling real-time strategy tower defence game! Strategize, upgrade, and triumph in Hobgoblins Against Dwarfs!

    Why similar: Tower Defense 25.9%, Action RTS 24.2% ★, RTS 23.2%, Base Building 13.6%, Strategy 9.7%

  6. #6 Forsaking Valhalla
    94% matchNo user reviews
    Dev: Stemmlar Technologies
    Windows

    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?

    Why similar: Action RTS 35.1% ★, Tower Defense 20.8%, RTS 20%, Base Building 12%, Strategy 6.5%

  7. #7 Don't Mind the Robots
    93% matchNo user reviews2026
    Dev: 2bitleft
    Windows

    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.

    Why similar: Action RTS 26.2% ★, Tower Defense 17.7%, RTS 17.4%, Base Building 12%, Resource Management 8.1%

  8. #8 Petty Kings
    92% matchNo user reviews2027
    Dev: BlackDove Studios
    Windows

    Petty Kings is a pixel art survival RTS about reclaiming your stolen kingdom. Rebuild your settlement, defend against night raids, raise your army, and destroy enemy outposts to take back your rightful throne.

    Why similar: Action RTS 28.3% ★, RTS 22.4%, Tower Defense 20.7%, Base Building 14.6%, Resource Management 7.8%

  9. #9 Our Last Stand
    91% matchNo user reviews2026
    Dev: Maurice
    Windows

    Our Last Stand is a tower defence game that allows you to command a powerful mech and defend against relentless waves of enemies. Play on different worlds to gather resources, unlock advanced technology, and level your commander to gain powerful new abilities. Build defend, survive.

    Why similar: Action RTS 31.3% ★, RTS 22.6%, Tower Defense 20.7%, Strategy 10.8%, Base Building 8.8%

  10. #10 Celestial Defense
    91% matchNo user reviews
    Dev: GoUnconditionalGames
    Windows

    Celestial Defense is a sci-fi space tower defense strategy game where tactical base building and resource management determine your survival. Build asteroid belts, evolve planets, and withstand relentless wave survival combat against the Void.

    Why similar: Action RTS 36.7% ★, Tower Defense 24%, Strategy 11.5%, Base Building 9.9%, Resource Management 7.1%

  11. #11 Critter Chaos TD
    90% match7 user reviews86% of 7 reviews2025
    Dev: Chaos Creations
    Windows

    Critter Chaos TD is a fast, frantic and chaotic Tower Defence game in which you must rid the world of the evil Critters. Build stations and guns to fortify your defences and prevent the various types of Critters from reaching your base.

    Why similar: Action RTS 38.8% ★, Tower Defense 19.6%, RTS 18.5%, Base Building 10.6%, Strategy 8%

  12. #12 TAVU
    89% matchNo user reviews
    Dev: Juhani Viitanen
    Windows

    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.

    Why similar: Action RTS 24.1% ★, RTS 19.2%, Base Building 14.9%, Tower Defense 11.6%, Resource Management 9.1%

  13. #13 Arise Dark Lord
    89% matchNo user reviews
    Dev: Introversion Software
    Windows

    You are The Dark Lord! Raise an evil army, and crush the race of men. An action-strategy hybrid RTS, blending tower defence, base building and direct control of your Dark Lord avatar, currently in early development.

    Why similar: Action RTS 37.3% ★, Tower Defense 20.9%, RTS 19.4%, Base Building 11.5%, Strategy 8%

  14. #14 ChargeDrop
    88% matchNo user reviews
    Dev: GliderDrones
    Windows

    A physics-driven tower defense game where one massive cube does everything: fight, build, activate, and survive. Drop into a neon sci-fi battlefield, hold back waves of Chaos Dice, and power up your defenses through energy, momentum, and precision.

    Why similar: Action RTS 32.4% ★, RTS 23.3%, Tower Defense 21.3%, Strategy 11%, Futuristic 4.6%

  15. #15 Fight for Freedom: Civil War
    87% matchNo user reviews
    Dev: Big Hands Game
    Windows

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

    Why similar: Action RTS 31.2% ★, Tower Defense 22%, RTS 18.1%, Base Building 12.7%, Strategy 7.3%

  16. #16 Skyfort
    86% matchNo user reviews
    Dev: Space Byte Studios
    Windows

    This game is a arcade block placing game mixed with action-packed Tower Defense gameplay mechanics. Build forts out of tetrominoes high up in the sky and defend it against the incoming waves of airships, by shooting at them with your minigun and building defenses!

    Why similar: Action RTS 28.7% ★, Tower Defense 22.5%, RTS 18.8%, Base Building 15.8%, Strategy 7.3%

  17. #17 Cult Defense
    86% matchNo user reviews
    Dev: Paulo Schmidt
    Windows · Linux

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

    Why similar: RTS 23.2%, Action RTS 22% ★, Tower Defense 20.9%, Base Building 14.7%, Resource Management 9.4%

  18. #18 Yãkoana: Dreams of Resistance
    85% matchNo user reviews
    Dev: Minimol Games
    Windows · Mac

    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.

    Why similar: Action RTS 25.5% ★, Tower Defense 20.5%, RTS 19.7%, Base Building 13.9%, Resource Management 6.9%

  19. #19 Apocalypseed
    84% matchNo user reviews
    Dev: Fliptico
    Windows · Mac

    Apocalypseed is a 2D real-time strategy game where you are the invasion. Devour humans to harvest flesh, build and strengthen an army of alien plants, and evolve your creatures into new forms with unique abilities. Crush the human resistance as it deploys increasingly dangerous threats to stop you.

    Why similar: Action RTS 35.1% ★, RTS 23.4%, Tower Defense 16.6%, Strategy 7.8%, Resource Management 7.6%

  20. #20 Cosmic Robots
    83% match1 user reviews100% of 1 reviews2026
    Dev: Aniode Pub: Aniode
    Windows · Mac

    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.

    Why similar: Tower Defense 24%, Action RTS 21% ★, RTS 20.7%, Strategy 9.1%, Base Building 8.5%

  21. #21 Throneguard: Last Stand
    84% matchNo user reviews
    Dev: Ahmet Enes Cakir
    Windows

    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.

    Why similar: Action RTS 33.1% ★, Tower Defense 22.5%, Base Building 14.5%, RTS 13.4%, Strategy 6.1%

  22. #22 Tower Defense Ultimate: Crashfall Protocol
    82% match3 user reviews100% of 3 reviews2026
    Dev: Thonus Digital
    Windows

    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.

    Why similar: Action RTS 33.9% ★, Tower Defense 23.1%, RTS 18.2%, Strategy 6.7%, Sci-fi 6%

  23. #23 Fable Forts! - Tower Defense
    82% matchNo user reviews
    Dev: Wirescribe Corp
    Windows

    Fable Forts! TD: defend your fairy kingdom from stupid human invaders!

    Why similar: Action RTS 28.1% ★, Tower Defense 25%, RTS 22.8%, Base Building 11.6%, Strategy 8.9%

  24. #24 JKRobots
    81% match1 user reviews100% of 1 reviews2026
    Dev: JKRobots
    Windows

    Take on thousands of robots in a massive, 25-hour macro-focused RTS campaign. Reclaim territory, harvest resources, and upgrade your army to crush the machine stronghold. But beware: the harder you push, the harder they push back.

    Why similar: RTS 32.3%, Tower Defense 26.5%, Base Building 14.5%, Strategy 13.9%, Resource Management 11.8%

  25. #25 Fishball Defence
    81% matchNo user reviews
    Dev: BitForest
    Windows

    Build a tiny fishball base, organize your crew, and hold the line. When defenses falter, possess a fishball and fight with toothpick swords and bottle-cap shields. A single-player roguelite that brings base management and hands-on combat together.

    Why similar: Action RTS 34% ★, Base Building 18.8%, Tower Defense 18.1%, RTS 15.7%, Strategy 7.2%

  26. #26 Witch Way
    80% matchPositive86% of 21 reviews2025
    Dev: e-sheep
    Windows

    Assemble your army, build your village, manage your villagers, and survive the night's monster attacks until dawn.

    Why similar: Action RTS 42.9% ★, Tower Defense 25%, Base Building 14.1%, Strategy 7.4%, Resource Management 6%

  27. #27 Annexation
    79% matchNo user reviews2027
    Dev: Hotkey Clicker
    Windows · Mac · Linux

    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.

    Why similar: Action RTS 42.7% ★, RTS 22.2%, Base Building 10.6%, Strategy 8.7%, Arcade 5.7%

  28. #28 MythTerra
    79% matchNo user reviews
    Dev: Svarog's Forge
    Windows

    The goblin tribes have descended from the wastelands, and only you can stop them. In this high-fantasy pixel art RTS, you must unite the fractured realms of humans, elves, and dwarves. Build your base, manage resources, and unleash powerful magic to defend your kingdom from the goblin horde.

    Why similar: Action RTS 45.4% ★, RTS 24.9%, Base Building 12.2%, Strategy 10.3%, Resource Management 5.3%

  29. #29 Stellar Infestation
    78% match7 user reviews86% of 7 reviews2025
    Dev: YogurtGames
    Windows

    Dig minerals, manufacture ammunition, and build defense towers to fend off swarms of insects. A tower defense game with light production line elements.

    Why similar: Tower Defense 26.5%, RTS 21.4%, Base Building 13.1%, Strategy 13%, Resource Management 11.4%

  30. #30 Stick Infinite Kingdom
    77% matchMixed67% of 60 reviews2025
    Dev: Arckon Arts
    Windows

    Master strategic gameplay as you build, train, and upgrade units to protect your base. With an immersive storyline, stunning visuals, and easy controls, it's an epic battle for survival!

    Why similar: Action RTS 38.4% ★, Tower Defense 23%, RTS 22.6%, Strategy 7.4%, Score Attack 3.7%

  31. #31 Steel Command
    77% matchNo user reviews
    Dev: Smitty Games
    Windows

    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.

    Why similar: RTS 29.4%, Action RTS 28.5% ★, Base Building 18.2%, Strategy 11.1%, Sci-fi 4.8%

  32. #32 TD VOID
    76% matchNo user reviews
    Dev: SoftField
    Windows

    Defend humanity against a machine Void that turns Earth's own technology into a weapon. An alien nanocluster has reached Earth. It doesn't invade with soldiers. It infects factories, military vehicles, etc. Your mission is simple: Protect the Shield Core. Survive every assault. Stop the spread.

    Why similar: Action RTS 37.4% ★, Tower Defense 24.8%, Strategy 11.9%, Base Building 8.4%, Futuristic 5.2%

  33. #33 Sporestorm: Frontier Defense
    76% matchNo user reviews
    Dev: 土法炼钢兴趣小组
    Windows

    A hand-drawn survival tower defense on a hostile alien world. No fixed lanes — towers and ice walls reshape the swarm in real time. Command engineer Mulan on the front line, trigger spore-chain reactions, and hold a collapsing mine. The full game expands the roster, enemies, and battlefields.

    Why similar: Action RTS 23% ★, Tower Defense 21.9%, RTS 19.9%, Base Building 13.6%, Sci-fi 7.6%

  34. #34 LowPoly Towerdefense
    75% match8 user reviews67% of 9 reviews2024
    Dev: Holger Trampe
    Windows

    You play in a SciFi environment with LowPoly graphics, engaging in Tower Defense. Manage resources! Each round introduces more enemies that you must defeat. Build resource ships in the factory and simultaneously construct towers on the platforms to fend off the adversaries.

    Why similar: Action RTS 42.5% ★, Tower Defense 28.2%, Strategy 14.5%, Base Building 11.8%, 3D 1.5%

  35. #35 Negative Energy
    74% match3 user reviews67% of 3 reviews2025
    Dev: ByVal Games
    Windows · Linux

    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.

    Why similar: Action RTS 26.9% ★, Tower Defense 24.4%, RTS 23.3%, Strategy 11.7%, Sci-fi 4.5%

  36. #36 Battle For Cosmos
    75% match6 user reviews100% of 6 reviews2023
    Dev: Oscar Makes Games
    Windows

    Battle For Cosmos is a fast-paced, action-packed RTS set in space. With a focus on the battle it is perfect for those who want a thrilling and engaging strategy game without the unnecessary filler. Take control of your empire, build your defenses, and conquer the cosmos!

    Why similar: Action RTS 47.2% ★, RTS 25.8%, Strategy 8.6%, Resource Management 6.5%, Sci-fi 6.1%

  37. #37 Total Tower Engine
    73% matchNo user reviews
    Dev: RubyRTS
    Windows · Mac · Linux

    Tired of RNG and card draws? Experience a "Plan first, pay later" economy where construction scales with your income in real time. As the map grows massive, only careful planning. Not a lucky roll, will keep you alive.

    Why similar: Tower Defense 29.8%, RTS 27.9%, Base Building 17.9%, Resource Management 13.1%, Strategy 7.6%

  38. #38 Dangerous Land
    74% matchPositive94% of 32 reviews2023
    Dev: Randi Games
    Windows

    Dangerous Land is a first-person real-time strategy game combining settlement management, army command, exploration and combat. Develop your settlement, recruit an army and stand alongside your soldiers on the battlefield.

    Why similar: Action RTS 27.2% ★, RTS 22.3%, Tower Defense 17%, Base Building 14.6%, Resource Management 7.4%

  39. #39 AeonFall
    73% matchNo user reviews
    Dev: Dalla Games Inc.
    Windows

    Endless waves of 100,000 infected pour toward you. A brutally hard roguelike defense built on the Paradox of Progress: every advance raises the noise, and louder noise draws a deadlier swarm. Design your base, break through with one unit you control, and adapt each run. Survive a planet alone.

    Why similar: Action RTS 28.2% ★, Tower Defense 22%, RTS 21.2%, Base Building 15.3%, Sci-fi 5.9%

  40. #40 Defence of Nythrial
    73% matchNo user reviews
    Dev: Fantasy Bytes Entertainment
    Windows

    Defence of Nythrial is a 2D, Top down, Tower Defence / Real Time Strategy Game.

    Why similar: Action RTS 36.5% ★, RTS 26.4%, Tower Defense 24.1%, Strategy 12.7%, Singleplayer 0.3%

  41. #41 BioFusion
    72% matchPositive90% of 20 reviews2024
    Dev: Pcubed VR
    Windows

    BioFusion is a VR co-op multiplayer, PvE, first-person-shooter, tower defense game. Swing on a grappling hook, ride a hovercraft, throw grenades, collect buffs, build towers and traps. Do what you must to keep the mutants from the Spores of Evolution.

    Why similar: Action RTS 34.9% ★, Tower Defense 20.5%, RTS 19.8%, Base Building 11.7%, Strategy 6%

  42. #42 Uncrewed 2
    71% matchNo user reviews
    Dev: Quite Different Mechanics
    Windows

    Uncrewed 2 is a real-time strategy game that lets the player design units from the ground up. Wheels, treads, walker legs, and rocket engines - the game offers a variety of propulsion options, as well as the ability to craft your own weapons.

    Why similar: Action RTS 36% ★, RTS 23.1%, Base Building 11.1%, Strategy 7.8%, Sci-fi 6.9%

  43. #43 Starfall Defenders
    71% match1 user reviews100% of 1 reviews2025
    Dev: EntwicklerX
    Windows

    Starfall Defenders is a classic tower defense game that features unique towers and enemies. It also has an in-game shop system that allows players to purchase better towers, upgrade existing ones, and buy special items like the Atom Bomb, Splash Bomb, and Air Supply.

    Why similar: Action RTS 41.4% ★, Tower Defense 26.5%, Strategy 11.6%, Arcade 7.8%, Sci-fi 4.1%

  44. #44 Battle Among Stars - Alien War
    71% matchNo user reviews
    Dev: Dewin DevPub: Dewin Games
    Windows

    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.

    Why similar: Action RTS 27.4% ★, RTS 24.1%, Tower Defense 16.3%, Sci-fi 8.2%, Strategy 6.6%

  45. #45 Rift Haul TD
    70% matchNo user reviews2027
    Dev: Buttonbrain Games
    Windows

    Build, upgrade, evolve, and reposition your towers to counter new threats, explore powerful synergies, and stay one step ahead in this fast-paced fantasy tower defense.

    Why similar: Action RTS 37.3% ★, Tower Defense 24.7%, RTS 15%, Resource Management 9.3%, Strategy 7.1%

  46. #46 Valdrax Beyond the Rift
    69% match6 user reviews83% of 6 reviews2026
    Dev: Ganea Ion
    Windows

    Build a kingdom from nothing, forge your armies, and breach the rifts between worlds. Face endless enemies, recruit legendary creatures, and prepare for the ultimate battle against the Demon Lord. Every map is different. Every death is permanent.

    Why similar: Action RTS 25.1% ★, RTS 21.8%, Base Building 16.9%, Tower Defense 16.7%, Resource Management 10.4%

  47. #47 March Out!
    70% matchNo user reviews2026
    Dev: Mason Brignac
    Windows · Mac

    Lead your kingdom from the command hall, then fight beside the soldiers you recruited. Storm castles with friends in online battles for 2–4 players, or conquer a solo campaign where your surviving army marches into the next siege.

    Why similar: Action RTS 40.5% ★, RTS 22.6%, Base Building 12%, Tower Defense 8.9%, Strategy 7%

  48. #48 Shatterswarm
    69% matchNo user reviews2027
    Dev: Iron Fin Games
    Windows · Mac · Linux

    Command Captain Hope's ship in this strategic 2D space game. Build structures, deploy fleets, and manage resources to defend the Citadel against waves of enemies. Combine direct ship combat, tower defense, and base building as you face epic boss battles.

    Why similar: Action RTS 32.6% ★, RTS 23.1%, Tower Defense 21.3%, Strategy 10%, Futuristic 3.9%

  49. #49 Decimation
    67% matchPositive100% of 11 reviews2026
    Dev: Elementum Software Development Services
    Windows

    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.

    Why similar: Action RTS 35.8% ★, Tower Defense 23.2%, RTS 16.2%, Sci-fi 8.5%, Resource Management 5.6%

  50. #50 Obelisk Guardians
    69% matchNo user reviews
    Dev: OnionGame
    Windows

    This is a building tower defense game with RPG elements to hunt down the demon guard altar.

    Why similar: Action RTS 30.2% ★, Tower Defense 22.1%, RTS 19.6%, Base Building 16.5%, Strategy 7.1%

  51. #51 Unnatural Worlds
    68% matchNo user reviews2027
    Dev: Tomáš Malý
    Windows · Mac · Linux

    Innovative yet familiar real-time strategy game in development. Grand-scale RTS game played on maps/planets of any 3D shape. It emphasizes strategy, base building, logistics, and reduces micro-management of individual units.

    Why similar: Action RTS 32.3% ★, RTS 20.4%, Base Building 14.8%, Tower Defense 9.9%, Resource Management 9.7%

  52. #52 Little Kingdom RTS
    67% matchVery Positive87% of 82 reviews2025
    Dev: MyDreamForeverPub: Andgo Games
    Windows

    Little Kingdom RTS is an indie real-time strategy game set in a medieval fantasy world. Gather resources, build settlements, raise walls, and grow your small kingdom. Command an army of knights, archers, and mages to fight off rival kingdoms, orcs, and undead.

    Why similar: Action RTS 26.3% ★, RTS 20.8%, Tower Defense 20.6%, Base Building 15.6%, Resource Management 9.2%

  53. #53 Crustacean Nations
    68% matchVery Positive93% of 529 reviews2022
    Dev: Team Beans
    Windows

    🦀Crustacean Nations🦀 is a real-time strategy game about total crab warfare. Build a sprawling sand castle and amass huge armies to dominate the beach and become the one true crustacean nation!

    Why similar: Action RTS 40.5% ★, RTS 20.5%, Base Building 18.3%, Resource Management 9%, Strategy 8.2%

  54. #54 Liquidia
    68% matchNo user reviews
    Dev: FloatUpGames
    Windows

    Liquidia is a survival-crafting game about water. You're a cat-folk exploring islands, using magical water to wake ruins and restore the land. Build by day, fight monsters by night. Summon water spirits, grow plant defenses. Simple systems, pure creation and survival.

    Why similar: Action RTS 39.7% ★, Tower Defense 20.4%, RTS 13.7%, Base Building 13.5%, Resource Management 7.2%

  55. #55 Cyberwinter
    70% match3 user reviews67% of 3 reviews2021
    Dev: Panda Pasha Games
    Windows

    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.

    Why similar: Action RTS 35.7% ★, Base Building 16.1%, RTS 15.2%, Resource Management 10.3%, Sci-fi 7.5%

  56. #56 Alienshire
    67% matchNo user reviews2027
    Dev: emagnetic
    Windows

    Alienshire is a classic real-time strategy game where you command an alien force, harvest biomass, build your army, and fight for control of a familiar landscape.

    Why similar: RTS 32%, Action RTS 28.2% ★, Resource Management 13.9%, Strategy 11.7%, Sci-fi 9.6%

  57. #57 Domefender
    66% match1 user reviews100% of 1 reviews2026
    Dev: StuffInChest
    Windows

    In Domefender you are the commander of a mining outpost on a hostile alien planet - and the pilot of a powerful customizable mech. Expand your base, recruit soldiers, and take control of your mech to defend your dome generator at all costs.

    Why similar: Action RTS 30.6% ★, RTS 20.8%, Tower Defense 19.6%, Base Building 7.9%, Strategy 7.4%

  58. #58 Ant Guardians Prologue
    66% matchPositive91% of 11 reviews2025
    Dev: JCGames
    Windows

    It’s a defense game where you create your own strategy, grow your units, and defend against enemies.

    Why similar: Action RTS 35.6% ★, Tower Defense 23.4%, RTS 23.2%, Strategy 7.4%, Sci-fi 5.2%

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Games Like Ad Astra: Sci-Fi Tower Defense

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