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Games Like Idle Geometry Defense

60+ similar titles based on shared tags and player behavior. Themes include Casual, Sci-fi, Singleplayer, Simulation.

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  1. #1 Void Core
    97% matchNo user reviews2026
    Dev: Badgertainment
    Windows

    Start as a microscopic speck, become the end of everything. Void Core is a minimalist sci-fi idle game where you control a black hole. Harvest matter, bend spacetime to automate your growth, and consume entire galaxies. Consume. Grow. Evolve.

    Why similar: Automation 19.7%, Idler 19.5%, Space Sim 18.4%, Incremental 16%, Space 11.5%

  2. #2 Katakamuna Idle
    96% matchNo user reviews2026
    Dev: Hapiwaku
    Windows · Mac

    Experience cosmic harmony in this Katakamuna-inspired idle game. Gather "Ka," the essence of all existence, and weave the 80 verses of the Katakamuna Utahi. As an idle game, actions automate as you progress, allowing you to create harmony through color and sound, even when offline.

    Why similar: Space Sim 23.2%, Automation 18.9%, Idler 14.3%, Incremental 12.7%, Abstract 9.9%

  3. #3 Universe Horizon
    96% matchVery Positive89% of 227 reviews2025
    Dev: Jarkem
    Windows · Linux

    An idle incremental game where you decide to travel across the whole Universe. Embark on this journey in your little ship and get as far away as possible from Earth, gathering resources and upgrading your spaceship along the way.

    Why similar: Automation 23.6%, Idler 18.8%, Incremental 16.9%, Space 12.4%, Resource Management 11.4%

  4. #4 Industronaut
    95% matchNo user reviews2026
    Dev: Amca Games
    Windows

    A survival engineering game where you build life support habitats, mine resources, and automate production chains on a radiation heavy planet. No rescue. No support. Just engineering.

    Why similar: Automation 28.9%, Space Sim 26.5%, Resource Management 12.4%, Sci-fi 8.1%, Survival 7.9%

  5. #5 Astrodle
    94% matchVery Positive89% of 222 reviews2024
    Dev: Robin Nicolet
    Windows

    Ready for some chill time in space? Astrodle has you covered. Watch the numbers soar as you upgrade your ship and travel the stars. Oh, and you might just become a god.

    Why similar: Automation 19.9%, Incremental 19.4%, Idler 18.2%, Futuristic 10%, Space 9.1%

  6. #6 Idle Circles
    94% matchNo user reviews2026
    Dev: Florent Fortat
    Windows

    Relax and watch your marbles fill circle after circle. Make strategic improvements then unwind in this retro futurist, idle arcade game.

    Why similar: Idler 18.9%, Automation 18.9%, Incremental 13.5%, Abstract 12.8%, Futuristic 9.5%

  7. #7 NodalBastion
    93% matchNo user reviews2026
    Dev: BNStudio
    Windows · Linux

    Defend the last AI core in a minimalist incremental game as you manage resources, upgrade your network, and unleash powerful skills. Resist humanity’s onslaught!

    Why similar: Tower Defense 29.5%, Idler 22.2%, Resource Management 15.3%, Automation 13.1%, Abstract 12.7%

  8. #8 Hostile Mars
    92% matchNo user reviews
    Dev: Big Rook Games
    Windows

    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!

    Why similar: Tower Defense 17.2%, Automation 16.4%, Space Sim 13.5%, Survival 10%, City Builder 8.9%

  9. #9 Unnamed Space Idle
    91% matchVery Positive93% of 4,158 reviews2023
    Dev: SylvPub: Jdog Corp
    Windows · Linux
    Median: 10.5 hrsMean: 293.6 hrs≥1hr: 78%

    Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.

    Why similar: Idler 25.4%, Incremental 20.4%, Space 12.3%, Automation 12.1%, Resource Management 10.9%

  10. #10 Orbital Nexus
    91% match1 user reviews100% of 1 reviews2025
    Dev: ZxStudio
    Windows

    Start on a barren planet, expand your empire through resource management, fleet building, and planetary conquest. Discover cosmic relics, trade or fight with neutral factions, and build galactic wonders like particle colliders. Balance strategy, exploration, and combat to dominate the galaxy!

    Why similar: City Builder 21.1%, Futuristic 16.3%, Space Sim 16.2%, Sci-fi 13.6%, Strategy 10.2%

  11. #11 Swarmex
    90% matchNo user reviews2026
    Dev: Gavin PiliczkyPub: Tangy Orange Games
    Windows

    Swarmex is a casual pixel-art tower defense game where you build and upgrade a modular space base. Place turrets, mine resources with automated miners, and optimise adjacency bonuses as your defences run on their own. Play in short, satisfying sessions.

    Why similar: Tower Defense 22.1%, Idler 14.5%, Incremental 14.4%, Automation 13.4%, Strategy 9.3%

  12. #12 InfiniDomino
    89% matchNo user reviews2026
    Dev: Vasrak Games
    Windows

    Doom has arrived. But beyond the end… there are still dominoes. Push the dominoes to start a chain reaction, and grow exponentially through offerings and reincarnation. A meditative idle game featuring multi-layered prestige, automation, and strategy-driven challenges.

    Why similar: Automation 27.1%, Idler 23.9%, Incremental 19.2%, Resource Management 12.8%, Isometric 11.4%

  13. #13 Starship Factory
    89% matchNo user reviews
    Dev: BumbleRat Games
    Windows · Mac

    Starship Factory is a construction / space simulation game where you build, test, and optimize rocket production for Mars colonization.

    Why similar: Space Sim 29%, City Builder 17.6%, Automation 11%, Futuristic 10.8%, Strategy 7.3%

  14. #14 Galaxy Idle Clicker
    87% matchMostly Positive75% of 1,155 reviews2025
    Dev: SoehnlePub: TimeLost Gaming
    Windows
    Median: 11.0 hrsMean: 350.9 hrs≥1hr: 70%

    Embark on an interstellar journey with Galaxy Idle Clicker! Conquer galaxies, upgrade your spaceship, and face off against a myriad of enemy ships. With engaging minigames, powerful upgrades, GIC delivers an unparalleled idle space adventure. Join the cosmic conquest today and dominate the universe!

    Why similar: Idler 20.3%, Space Sim 20.2%, Incremental 18.6%, Resource Management 13.2%, Space 13%

  15. #15 System Ascension: Idle Core
    88% matchNo user reviews2026
    Dev: Studio Rouleau Inc
    Windows · Mac

    Take control of The System. Master multiple interlocking power sources to build a singular, planetary engine in this narrative idle game. Features a fully voiced story, minimalist UI, and cross-platform play. The old world must fall for The System to rise.

    Why similar: Automation 22.4%, Space Sim 20.3%, Idler 18.6%, Incremental 13%, Sci-fi 9.3%

  16. #16 BastionOS
    86% matchVery Positive98% of 117 reviews2026
    Dev: Feral Paw
    Windows · Mac

    A short active incremental game where you stack ludicrous weapons and upgrades onto a tower. Destroy a gigantic evolving horde, unlock new tech, repeat.

    Why similar: Tower Defense 18%, Idler 15.8%, Incremental 15.8%, Abstract 13.2%, Isometric 13%

  17. #17 Little Asteroid Miner
    86% matchMostly Positive70% of 10 reviews2025
    Dev: TCS Developer
    Windows

    An idle incremental adventure in space! Mine asteroids while fighting off enemy AI drones. Build your own AI drones, mining lasers, helper drones and more. Collect hundreds of rewards and unlock a variety of features that will help your ultimate goal: making numbers go up (or sometimes down).

    Why similar: Idler 19.9%, Space Sim 19.4%, Incremental 16.9%, Sci-fi 9.4%, Space 9.2%

  18. #18 Comet Tycoon
    85% match9 user reviews89% of 9 reviews2026
    Dev: CalmFrantix
    Windows

    Build and automate your way from a comet miner to an entertainment mogul in this isometric tycoon game. Harvest resources and buy bigger comets to keep more peeps happy, alive and profitable.

    Why similar: Automation 24.5%, City Builder 16.4%, Space Sim 14.2%, Isometric 14%, Resource Management 13%

  19. #19 Orbitmine
    84% matchVery Positive84% of 353 reviews2026
    Dev: vibemaker1
    Windows

    Orbit a planet, fire your laser, and mine it to the core. Upgrade your ship and conquer seasonal hazards across four unique zones. A satisfying incremental mining game set in space.

    Why similar: Automation 20.3%, Space 18.1%, Sci-fi 15.6%, Idler 15%, Incremental 10.3%

  20. #20 Light 'Em
    84% matchPositive81% of 16 reviews2025
    Dev: Mina Pêcheux
    Windows · Mac · Linux

    The whole universe is at your mouse-clicks in this sci-fi idler game - make stars, make constellations, and make more power... to keep making more! Plus, you'll get to discover real constellations, or design your own :)

    Why similar: Incremental 23.6%, Idler 22.4%, Automation 14.7%, Space 13.7%, Abstract 12.6%

  21. #21 Idle Dyson Swarm
    83% matchMixed61% of 74 reviews2026
    Dev: Blindsided Games
    Windows · Mac · Linux

    Ever wanted a Dyson swarm of your own? Now you can have one with just a few clicks! Manage a solar empire, produce bots which will make solar panels for you. Send your panels to the sun to generate energy and sell that energy to make money which you can spend on even more bots!

    Why similar: Idler 26.1%, Incremental 21.3%, Space 14.6%, Strategy 10.6%, Futuristic 8.4%

  22. #22 Office of Interstellar Production
    82% match1 user reviews100% of 1 reviews2025
    Dev: Moonchisel Studio
    Windows

    Take the reins of the newly founded Office of Interstellar Production, annex newly discovered star systems, mine resources and refine quality components to build mighty warships to deliver to the unceasing needs of the Navy. A chill sandbox resource management game.

    Why similar: Space Sim 31.9%, Idler 20.5%, Resource Management 12.9%, Automation 10.7%, Sci-fi 9.1%

  23. #23 ZaciSa: Idle Defense!
    81% matchNo user reviews2027
    Dev: ZeNfA Productions
    Windows · Mac · Linux

    A Tower Defense game mashed with Idle Clicker mechanics set inside a wonderful world of crayons. Build out your defenses, go grab a snack and watch your forces take on enemy units.

    Why similar: Tower Defense 24.7%, Idler 19.3%, Incremental 16.5%, Space 10.7%, Survival 8.4%

  24. #24 Eldritch town
    80% matchNo user reviews
    Dev: Natrix
    Windows · Mac · Linux

    Eldritch town is an incremental tower defense game. Build your town, manage resources, research tech, build an army and upgrade your towers to defeat hordes of Lovecraftian horrors and uncover the secrets of this forgotten island.

    Why similar: Tower Defense 19.6%, Idler 17.5%, Incremental 15.6%, City Builder 14.6%, Resource Management 10.5%

  25. #25 DJ Clicker - World Tour
    81% matchPositive85% of 13 reviews2024
    Dev: Rockshurt Games
    Windows

    This is a short and relaxing game about electronic music. Unlock and listen to 72 great tracks made by talented artists. Travel to 12 live locations, meet new characters and find rare vinyl records.

    Why similar: Electronic Music 49.4%, Automation 16.1%, Incremental 13.9%, Idler 10.4%, Arcade 5.9%

  26. #26 AGI Developer: Click Is All You Need
    79% matchNo user reviews2026
    Dev: Ota Mato
    Windows

    A clicker/incremental game themed around AGI (Artificial General Intelligence) development. Use AI to streamline AI development, build data centers and power plants, and venture into space in pursuit of even more power.

    Why similar: Automation 24.9%, Incremental 19.7%, Idler 16.5%, Resource Management 13.7%, Sci-fi 8.4%

  27. #27 Androsystem Idle
    79% matchMixed52% of 21 reviews2024
    Dev: RedKar Devs
    Windows

    Produce Androids and create a Fleet that will help you conquer new planets. Mine valuable minerals that will further increase your production capacity.

    Why similar: Automation 22.9%, Idler 19.3%, Incremental 17.4%, Space 13%, Resource Management 11.3%

  28. #28 Crystal Keeper
    78% match7 user reviews29% of 7 reviews2025
    Dev: WombartPub: Wombart Games
    Windows

    Mine crystals and defend your wall in this survival defense game. Balance resource gathering with combat as you upgrade your way through endless enemy waves.

    Why similar: Tower Defense 24.9%, Automation 21.4%, Incremental 18%, Strategy 11.1%, Idler 10.9%

  29. #29 Space Colonizers Idle Clicker
    82% matchMixed47% of 45 reviews2018
    Dev: CapPlay Interactive Inc.
    Windows · Mac

    Space Colonizers is a simulation and strategy idle game of Sci-Fi adventure theme. To explore more planets and meet cute aliens, you have to constantly install parts and upgrade spacecraft.

    Why similar: Space Sim 29.5%, Incremental 19.7%, Idler 13.3%, Futuristic 9.4%, Space 8.1%

  30. #30 Trappist
    78% matchVery Positive90% of 72 reviews2024
    Dev: Sirrah
    Windows · Mac · Linux

    Welcome to Trappist-1, 40.7 light-years from Earth. Fly your Ark, a colossal spaceship and mobile base. Explore the solar system and establish thriving colonies. Uncover the mysteries of Trappist in this story-driven colony builder.

    Why similar: Space Sim 21.2%, Automation 16.3%, City Builder 13.4%, Isometric 9.4%, Space 8.5%

  31. #31 ClickRush
    76% match9 user reviews67% of 9 reviews2026
    Dev: Broussen GamesPub: Broussen
    Windows

    ClickRush: Produce infinite clicks! Deploy drones and AI matrices to automate your empire. Take down Real-Time World Bosses with the community, level up your Battle Pass, and unlock celestial bonuses. Dominate the global leaderboard. Get your mouse ready!

    Why similar: Automation 23%, Idler 18.5%, Incremental 18.1%, Resource Management 9.7%, Simulation 8%

  32. #32 Galactic Simulator
    76% matchMostly Positive75% of 44 reviews2025
    Dev: PcZ Games
    Windows · Mac

    Galactic Simulator is a clicker game based on the Fermi Paradox and the Great Filter theory. Players can simulate the evolution of celestial bodies and civilizations in the galaxy from an observer's perspective. The game supports multiplayer mode. Create a unique galaxy with friends!

    Why similar: Space Sim 27.3%, Idler 18.5%, Incremental 12.8%, Space 12.1%, Futuristic 9.9%

  33. #33 Idle Space Navy
    77% matchMixed48% of 58 reviews2023
    Dev: Phoenix Aura
    Windows · Mac

    A sci-fi idler. Upgrade your ships, get new items, and conquer the stars.

    Why similar: Idler 27.8%, Incremental 22.4%, Strategy 12%, Futuristic 10.6%, Space 10.1%

  34. #34 Wave Defense: Trappist
    75% match2 user reviews50% of 2 reviews2025
    Dev: Neon DevelopmentPub: Caketown Interactive
    Windows · Mac

    Gear up and get going! Defend your outposts from waves of alien enemies with your mech. Build and upgrade your base, protecting the extraction of the mysterious planetary system’s rich resources!

    Why similar: Electronic Music 42.3%, Tower Defense 20.1%, Space 11.6%, Futuristic 11%, Sci-fi 7.2%

  35. #35 air star
    77% matchPositive83% of 23 reviews2023
    Dev: DogmaQuest
    Windows · Mac · Linux

    Throw Planes, Buy Upgrades, and Place Towers to defend against the oncoming waves of luggage! With 50+ unique upgrades to buy, discover new builds run after run. Unlock tons of froggy cosmetics in this Character Tower Defense!

    Why similar: Tower Defense 21.5%, Automation 17.4%, Incremental 15.4%, Isometric 14.3%, Idler 13.7%

  36. #36 Planetfall: Endless Wave
    74% matchNo user reviews
    Dev: Ryan McDougallPub: Highland Forge Games
    Windows

    Planetfall: Endless Wave is an idle incremental base-defence game with a classic RTS look. Survive endless waves of alien invaders by upgrading turrets, fortifications, and troops as the battlefield grows more hostile with every wave.

    Why similar: Automation 22.6%, Incremental 20.9%, Idler 20%, Isometric 11.2%, Resource Management 5.4%

  37. #37 Queen's Vanguard
    74% matchNo user reviews
    Dev: Nido40fied
    Windows

    Chess Meets Tower Defense – Strategize, Defend, and Conquer!

    Why similar: Tower Defense 29.2%, Incremental 18.5%, Idler 18.5%, Isometric 13.4%, Strategy 11.2%

  38. #38 Pixel Orbit
    73% matchNo user reviews2026
    Dev: YaxWorks
    Windows

    Incremental game about defending Earth from impending danger. Develop your Skill Tree to setup automatic turrets and various other defensive mechanisms.

    Why similar: Tower Defense 24.5%, Incremental 21.9%, Idler 21.5%, Strategy 8.9%, Arcade 8.6%

  39. #39 Clankers!
    73% matchMixed52% of 21 reviews2025
    Dev: Ill-Fated Studios
    Windows · Mac · Linux

    Clankers! is a short incremental robot killing game. Kill Clankers, gather money and spend it on weapons and upgrades to stop Clankers from stealing our jobs!

    Why similar: Tower Defense 19.7%, Idler 18.1%, Incremental 17.8%, Abstract 12.5%, Futuristic 9%

  40. #40 星际工业国:崛起
    75% matchVery Positive90% of 143 reviews2023
    Dev: 游戏养家工作室Pub: 跪求愿望
    Windows

    This is a idle game modeled on industrial building gameplay. It will be three-dimensional, complex industrial assembly line, easy, simple plane conveyor belt. At the same time to join the battleship assembly, space campaign, character development, giant construction, trade orders and other gameplay!

    Why similar: Automation 35.8%, Space Sim 34.4%, Space 15.4%, Idler 10.6%, Strategy 3.8%

  41. #41 HAS Galactics
    73% match7 user reviews29% of 7 reviews2025
    Dev: HAS Games
    Windows

    HAS Galactics is a top-down factory builder. Design your own rocket, automate your production lines, balance your reputation between the Galactic Factions and complete daring missions. Start from a humble beginning… to a thriving galactic mega-factory!

    Why similar: Automation 24.3%, Space Sim 20.9%, Resource Management 11.5%, Space 11%, City Builder 8.6%

  42. #42 Spaceflight Factory
    71% matchNo user reviews
    Dev: Kanapper
    Windows

    SpaceFlight Factory is an Automation and Base Building game with some survival game mechanics.You lead a small colony of human remnants. Help them to survive, expand and gather enough resources to leave Earth for their new home planet.

    Why similar: Automation 20.7%, Space Sim 18.8%, City Builder 13.3%, Idler 12.7%, Resource Management 10%

  43. #43 Reprocessed
    71% matchNo user reviews
    Dev: Macrostructura
    Windows

    Factory management and sandbox base building in zero-g environment. Survive, expand and then dominate space industrial market. Build large scale resource processing plant completely from nothing.

    Why similar: Automation 24.9%, Space Sim 21.6%, Resource Management 13.1%, Space 11.3%, Survival 9.3%

  44. #44 PlanetForge Protocol
    71% matchNo user reviews
    Dev: Railstar GamesPub: 2P Games
    Windows

    This is a strategy game that combines automated base construction with real-time tower defense. Land on a harsh alien planet, construct a vast automated industrial assembly line from scratch, and transform it into a formidable front capable of withstanding a massive influx of enemies.

    Why similar: Automation 33.6%, Tower Defense 22.7%, Resource Management 12.8%, Sci-fi 9%, Strategy 8.2%

  45. #45 Pantheon
    70% matchNo user reviews
    Dev: pixelwide
    Windows

    Manage a mysterious machine as it summons and consumes eldritch entities in this incremental game. Every entity consumed makes the machine more powerful, and unlocks new mechanics.

    Why similar: Idler 20.7%, Incremental 20.4%, Automation 18.2%, Abstract 16.8%, Strategy 11.8%

  46. #46 Idle Spiral
    72% matchVery Positive80% of 1,862 reviews2022
    Dev: Idle System, Inc.
    Windows
    Median: 3.3 hrsMean: 118.2 hrs≥1hr: 65%

    This is a beautiful "Idle", "Incremental" game based on spirals and mathematics. Your goal is to make the spiral grow farther and farther from the origin. The game is very simple, but it is very deep and can be enjoyed for a long time!

    Why similar: Idler 24.3%, Automation 24.1%, Incremental 22.5%, Abstract 11.1%, Simulation 6.1%

  47. #47 The Rift Machine
    70% matchNo user reviews
    Dev: Mechayaan
    Windows

    The Rift Machine is an incremental game about harvesting resources from inter-dimensional anomalies. Research technologies, manage resources and deploy contraptions to gain knowledge, wealth and power.

    Why similar: Automation 19%, Idler 18.7%, Incremental 17.8%, Resource Management 13.1%, Futuristic 11.6%

  48. #48 Flippant
    67% matchVery Positive97% of 64 reviews2026
    Dev: vomithog
    Windows

    An abstract incremental game about flipping a coin and maybe some other things too

    Why similar: Incremental 22.7%, Idler 21.4%, Automation 19.8%, Abstract 12.2%, Strategy 10%

  49. #49 Intergalactic Transfer Station
    69% matchNo user reviews
    Dev: OverPowered TeamPub: Games Operators
    Windows

    Build & manage your Intergalactic Transfer Hub. Receive travellers and dock ships. Help passengers transfer, but also control them. Expand hub, build shops, take care of everyone's needs. Increase profits, change taxes. But beware: dangerous diseases and asteroids may alter your plans!

    Why similar: Automation 19.3%, City Builder 13.8%, Isometric 12.8%, Simulation 11.2%, Futuristic 8.8%

  50. #50 Isometric Factories
    69% matchNo user reviews
    Dev: terrabytegs
    Windows

    Construct sprawling factories in the void of space, unlock new eras of technology, and expand your influence from a single planet to the vastness of multiple solar systems. From survival to galactic domination—mine, build, trade, and expand across solar systems.

    Why similar: Space Sim 29.2%, Automation 29%, Isometric 17.7%, City Builder 8.6%, Sci-fi 8.6%

  51. #51 Idle TD: Heroes vs Zombies
    72% matchMostly Positive74% of 165 reviews2022
    Dev: Swell Games LLC
    Windows · Mac
    Median: 3.1 hrsMean: 28.5 hrs≥1hr: 66%

    An endless Tower Defense game of epic heroes vs evil zombies. Unlock and upgrade countless Heroes, artifacts, and technologies to defend against the infinite zombie swarms. Strategize the most effective placement of Heroes to synergize their skills and abilities.

    Why similar: Tower Defense 18.5%, Incremental 18.3%, Idler 15.3%, Automation 10.4%, Isometric 10.3%

  52. #52 Bottom Squad
    68% matchNo user reviews
    Dev: Family Devs
    Windows

    An idle defense game at the bottom of your screen. Build your squad, upgrade your base, and hold the line against relentless alien waves while you work or browse.

    Why similar: Tower Defense 22.9%, Idler 22.9%, Incremental 18.9%, Automation 14.4%, Sci-fi 6.1%

  53. #53 Sixty Four
    69% matchMostly Positive74% of 1,641 reviews2024
    Dev: Oleg DanilovPub: Playsaurus
    Windows · Mac
    Median: 5.8 hrsMean: 16.2 hrs≥1hr: 87%

    Dive into the world of Sixty Four, where you transform simple machines into a thriving factory.

    Why similar: Automation 25.7%, Incremental 20.8%, Isometric 15%, Idler 14.4%, Resource Management 12.2%

  54. #54 X Space
    68% matchNo user reviews2026
    Dev: X SPACE
    Windows

    A sudden, devastating strike has reduced your interstellar voyage to ruins. As the sole survivor in X SPACE, you must rebuild your space base from scratch, assemble a versatile fleet, and pilot your massive mobile fortress into the depths of the universe.

    Why similar: Space Sim 22.3%, Automation 20.1%, Tower Defense 19%, Space 11.6%, Survival 9.3%

  55. #55 Delos: Space Traffic Control
    67% matchVery Positive83% of 54 reviews2025
    Dev: hv
    Windows

    In Delos, you are the space traffic controller managing the flow of ships at a bustling space station. Direct docking, allocate resources, and prevent collisions in a real-time strategy setting. Balance efficiency and safety to maintain order in the interstellar hub.

    Why similar: Space Sim 43.6%, Incremental 12.9%, Sci-fi 12.3%, Resource Management 8.9%, Strategy 8.9%

  56. #56 Immunica
    66% matchPositive85% of 39 reviews2026
    Dev: eranboi
    Windows

    Become the immune system. Hover to kill. Weapons fire automatically. Manage your research lab, hire scientists, and develop a vaccine while fighting off endless pathogen hordes.

    Why similar: Idler 27.2%, Incremental 22.3%, Automation 14.3%, Abstract 10.9%, Arcade 9.8%

  57. #57 TechGuardian: Territory Defense
    67% matchMixed70% of 26 reviews2025
    Dev: Apex HorizonPub: Liquid Meow
    Windows

    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.

    Why similar: Tower Defense 22.4%, Automation 19.1%, Futuristic 12.3%, Resource Management 11.9%, Sci-fi 10%

  58. #58 OREBIT
    67% matchNo user reviews
    Dev: Wynter Forest Studio
    Windows

    Mine the cosmos in this idle space clicker! Collect rare resources, build powerful equipment, upgrade your ship, and unlock new stellar bodies. Rescue crew, automate mines, and uncover the secrets of the stars.

    Why similar: Space Sim 29%, Incremental 23.4%, Idler 22.1%, Space 14.6%, Simulation 5.9%

  59. #59 Idle Factory
    70% matchMixed57% of 47 reviews2022
    Dev: okyakusamaPub: okyakusama
    Windows

    Idle can also build your industrial empire.

    Why similar: Automation 24.5%, Idler 21.2%, Incremental 18.3%, Resource Management 13.7%, Space 8%

  60. #60 HULLJACKERS
    66% matchNo user reviews
    Dev: Dan Ouellette
    Windows

    Run a galactic pirate syndicate from a single screen. Raid ships, loot cargo, capture crew, and grow a fleet that raids in parallel while you watch. An incremental space-pirate idle game with tactical raids, a reputation-based black market, and a legendary endgame.

    Why similar: Space Sim 23.4%, Automation 22.9%, Idler 18.7%, Space 12%, Resource Management 9.4%

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Idle Geometry Defense cover art

Games Like Idle Geometry Defense

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