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Games Like IRON GUARD

60+ similar titles based on shared tags and player behavior. Themes include Strategy, Action, Tower Defense, Sci-fi.

IRON GUARD header art

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.

Reviews: Very Positive — 95% — of 148 reviews
Released: 2021-09-01
Developer: Xlab Digital
Genres: Action, Strategy
Platforms: Windows
Median playtime: 2.3 hrs
Mean playtime: 4.9 hrs
Players ≥ 1 hr: 76%

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  1. #1 Taur
    97% matchMostly Positive80% of 2,078 reviews2020
    Dev: Echo Entertainment
    Windows
    Median: 4.2 hrsMean: 6.8 hrs≥1hr: 76%

    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?

    Why similar: Tower Defense 29.9%, RTS 12.6%, Robots 9.9%, Real Time Tactics 8.5%, Strategy 7.9%

  2. #2 In Your Face TD
    96% matchVery Positive95% of 158 reviews2017
    Dev: BitBreak I/S
    Windows
    Median: 1.0 hrsMean: 9.2 hrs≥1hr: 51%

    In Your Face TD is a Tower Defense, which utilises room scale VR to give a new dimension to a classic genre. Fight the invading monsters face-to-face using a laser minigun, or even an exploding sawblade frisbee and build towers to stand your ground.

    Why similar: Tower Defense 37.6%, VR 34.3%, Strategy 19%, Action 9.1%

  3. #3 Cosmic Trip
    96% matchVery Positive85% of 525 reviews2017
    Dev: Funktronic Labs
    Windows
    Median: 2.0 hrsMean: 3.2 hrs≥1hr: 72%

    Cosmic Trip is an award-winning real-time strategy VR game. Build a base, command a flying drone army, and attack/defend hostile enemies on strange alien planets.

    Why similar: Action RTS 23.8%, Tower Defense 18.4%, RTS 17.9%, VR 16.5%, Space 7.7%

  4. #4 Kittypocalypse
    95% matchVery Positive89% of 204 reviews2016
    Dev: Bolverk Games
    Windows

    Kittypocalypse is an in-depth, strategic tower defense game built exclusively for VR. Across a diverse range of environments, defeat the hordes of evil alien kitties and salvage what's left of your home planet

    Why similar: Tower Defense 39.1%, VR 36.7%, Strategy 16%, Action 5.2%, Indie 3%

  5. #5 Eternal Starlight VR
    94% matchVery Positive91% of 75 reviews2021
    Dev: White Noise Games
    Windows

    Activate your Neural Link to gain an omniscient view of the battlefield. Experience the conflict at any scale, as you plot the course that will lead your fleet to victory. Eternal Starlight is a tactical space combat game, built from the ground up for VR.

    Why similar: RTS 17.5%, Action RTS 16.3%, VR 15.7%, Real Time Tactics 10.3%, Space 9.9%

  6. #6 No Creeps Were Harmed TD
    92% matchVery Positive89% of 482 reviews2024
    Dev: MinMax Games Ltd.
    Windows
    Median: 2.8 hrsMean: 5.5 hrs≥1hr: 74%

    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!

    Why similar: Tower Defense 27.4%, Action RTS 23.9%, Real Time Tactics 13.2%, Sci-fi 9.7%, Futuristic 7.2%

  7. #7 Artificial Defense
    93% matchVery Positive82% of 210 reviews2016
    Dev: Thiemo Bolder, ONEMANGAMES
    Windows
    Median: 3.5 hrsMean: 4.9 hrs≥1hr: 95%

    Artificial Defense is a one man made, real time strategy game combining orbital shooter and tower defense components within an electrifying, virtual reality setting. You are the machine, a mighty computer-system defending its servers against swarms of intruding creeps.

    Why similar: Tower Defense 41.9%, Strategy 33.4%, Action 14.7%, Indie 10%

  8. #8 Robowars
    94% matchMixed46% of 292 reviews2014
    Dev: N-Game Studios
    Windows
    Median: 3.0 hrsMean: 4.1 hrs≥1hr: 95%

    Robowars is back on Steam! Fight off troops of droids for freedom and honor in our classical tower defense game. Lead the forces of the Solar Union to protect the peaceful planet of Praymos from the aggressive Trade Confederation.

    Why similar: Action RTS 22.6%, Tower Defense 17.3%, RTS 16.2%, Robots 10.5%, Military 7.9%

  9. #9 Out of Ammo
    91% matchVery Positive84% of 740 reviews2016
    Dev: RocketWerkz
    Windows
    Median: 1.5 hrsMean: 3.0 hrs≥1hr: 66%

    Out of Ammo is an intense VR Tower Defense / FPS hybrid strategy game that will have you constructing defenses, calling in artillery, issuing orders, and taking direct control of your soldiers in order to survive a relentless enemy onslaught.

    Why similar: Tower Defense 24.8%, VR 21.7%, Real Time Tactics 19.7%, Military 14%, Strategy 6.9%

  10. #10 Guardians Frontline
    91% matchVery Positive82% of 335 reviews2023
    Dev: VirtualAgePub: Fast Travel Games
    Windows
    Median: 1.4 hrsMean: 5.2 hrs≥1hr: 58%

    Guardians Frontline is a sci-fi VR shooter that makes you a soldier and a commander. Fight off enemies and build bases in a single-player and co-op campaign, plus PvP game modes with full cross-play support.

    Why similar: VR 26%, Robots 20%, Real Time Tactics 19.6%, Sci-fi 12.7%, Futuristic 11.3%

  11. #11 IDUN - Frontline Survival
    90% matchMostly Positive79% of 671 reviews2025
    Dev: IDUN InteractivePub: Surefire.Games
    Windows · Mac · Linux
    Median: 5.1 hrsMean: 10.9 hrs≥1hr: 76%

    A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!

    Why similar: Tower Defense 23.2%, RTS 22.2%, Space 12.5%, War 10.6%, Sci-fi 9.3%

  12. #12 Iron Marines Invasion
    89% matchMixed69% of 350 reviews2023
    Dev: Ironhide Game Studio
    Windows
    Median: 2.1 hrsMean: 5.0 hrs≥1hr: 67%

    Prepare to take off, soldier! The galaxy needs your strategy! Prove your RTS expertise, explore an entire galaxy and defend it from a threatening invasion.

    Why similar: Action RTS 24.7%, RTS 21.1%, Real Time Tactics 16.1%, Military 12%, Space 10.7%

  13. #13 Siege of Centauri
    89% matchMixed66% of 448 reviews2019
    Dev: Stardock Entertainment
    Windows
    Median: 42 minMean: 6.0 hrs≥1hr: 44%

    Defend against thousands of enemies in this explosive tower defense game. Deploy upgradable towers and unleash powerful orbital abilities as you try to protect Earth's first colony world from destruction.

    Why similar: Tower Defense 27.7%, Real Time Tactics 22.5%, Robots 16.1%, War 9.8%, Sci-fi 9%

  14. #14 VOIDCRISIS
    88% matchMixed54% of 141 reviews2022
    Dev: HEXADRIVE Inc.
    Windows

    "VOIDCRISIS" is a four-player tower offense game on an undulating battlefield. Operate combat bio-machines called VA (Vital Armor) drawn with dynamic mechanical art shaders and work together to clear high-difficulty stages.

    Why similar: Action RTS 25.2%, Robots 17%, Tower Defense 16.2%, War 12.9%, Space 11.5%

  15. #15 Xeno Command
    86% matchVery Positive84% of 55 reviews2022
    Dev: ChillyRoomPub: ChillyRoom
    Windows

    Defend galaxy against Alien invasion in the RTS offline game with roguelike fun

    Why similar: Action RTS 27.9%, Tower Defense 18.9%, RTS 17.6%, Real Time Tactics 16.5%, Space 8.2%

  16. #16 Project RTD: Random Tower Defense VR
    86% matchMostly Positive75% of 57 reviews2020
    Dev: JAMONGPub: NGELGAMES
    Windows

    Experience 'Project Random Tower Defense' in virtual reality! Project RTD (Random Tower Defense) VR is a random defense game. Defend your Crystal from monsters invading upper and lower ground of the map! Three-dimensional vertical map created for VR only will make you fully immersed into the game.

    Why similar: Strategy 33.7%, Tower Defense 26%, VR 24.4%, Survival 6.1%, Futuristic 5.6%

  17. #17 BattleGroupVR2
    84% matchVery Positive88% of 155 reviews2025
    Dev: SpaceOwl Games
    Windows

    BattleGroupVR2 is a virtual reality real-time space strategy where you explore the galaxy and lead a fleet of powerful warships from the bridge of your flagship. Explore, mine, trade, hunt. Grow your fleet, upgrade your ships, train your captains, and battle the enemy from the captain's chair.

    Why similar: Action RTS 24.8%, RTS 18.6%, VR 17.2%, Military 12.4%, War 9.5%

  18. #18 2112TD: Tower Defense Survival
    84% matchVery Positive88% of 428 reviews2023
    Dev: Refinery Games
    Windows

    Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi adventure.

    Why similar: Tower Defense 37.3%, Space 16.7%, Sci-fi 14.9%, Strategy 10.3%, Survival 10.3%

  19. #19 SENTRY
    82% matchVery Positive83% of 853 reviews2024
    Dev: Fireblade Software
    Windows
    Median: 2.7 hrsMean: 5.2 hrs≥1hr: 70%

    SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.

    Why similar: Tower Defense 38.9%, Space 16.1%, Sci-fi 14.8%, Strategy 10.8%, Survival 10.3%

  20. #20 Stellarcraft
    82% matchVery Positive91% of 99 reviews2026
    Dev: DreamStudios
    Windows

    Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in 4-player co-op. 🚀

    Why similar: Action RTS 31.7%, Real Time Tactics 21%, RTS 19.4%, Sci-fi 8.7%, Strategy 8.4%

  21. #21 Molten Armor
    85% matchMixed62% of 60 reviews2017
    Dev: Brutal Muse
    Windows

    Molten Armor is an action tower defense game with a non-linear story in sci-fi setting! Command defenses and stop hordes of enemies! Fight on land, sea and in the skies!Decisions taken in the heat of battle will change the course of the war.

    Why similar: Tower Defense 23.2%, RTS 21.6%, Real Time Tactics 16.1%, Futuristic 9%, Sci-fi 7.8%

  22. #22 Raw Data
    83% matchMostly Positive76% of 2,483 reviews2017
    Dev: Survios
    Windows
    Median: 1.1 hrsMean: 4.1 hrs≥1hr: 52%

    Built from the ground up for VR, Raw Data’s action gameplay, intuitive controls, challenging enemies, and sci-fi atmosphere will completely immerse you within the surreal world of Eden Corp. Go solo or team up and become the adrenaline-charged heroes of your own futuristic technothriller.

    Why similar: VR 30.7%, Robots 27.2%, Sci-fi 14.1%, Futuristic 11.7%, Strategy 9.4%

  23. #23 BattleGroupVR
    81% matchVery Positive92% of 943 reviews2023
    Dev: SpaceOwl Games
    Windows · Linux
    Median: 1.7 hrsMean: 4.4 hrs≥1hr: 62%

    BattleGroupVR is a first person real-time space strategy where you lead a fleet of powerful warships into battle from the bridge of your own flagship. Assemble your fleet, upgrade your load-outs, train your captains, engage the enemy and secure the sector. Try not to go down with the ship.

    Why similar: RTS 21.5%, VR 20.2%, Real Time Tactics 16.6%, Space 14.9%, Sci-fi 9.5%

  24. #24 Space Cycle
    79% matchVery Positive94% of 198 reviews2024
    Dev: Some Sugar Studio
    Windows

    Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe. Allocate resources, upgrade defenses, and repel relentless enemy attacks! With over 50 unique units and deep strategy, experience real-time tower defense!

    Why similar: Tower Defense 44%, Space 24.7%, Sci-fi 16.5%, Strategy 12.1%, Indie 2.7%

  25. #25 Mineral Defense
    78% matchVery Positive91% of 236 reviews2024
    Dev: Corestone Games
    Windows · Linux

    Mineral Defense combines tower defense with roguelite elements and procedural generation. Build paths, unlock upgrades, and unleash powerful synergies to conquer evolving challenges in an ever-expanding world.

    Why similar: Tower Defense 39.8%, Robots 14.2%, Space 12.8%, Strategy 11.6%, Sci-fi 10.1%

  26. #26 Alien Robot Monsters
    81% matchVery Positive85% of 124 reviews2015
    Dev: Kraftix Games
    Windows · Mac · Linux
    Median: 7.0 hrsMean: 11.9 hrs≥1hr: 95%

    Epic sci-fi tower defense action with 16-bit era look and feel, pitching your colonists against an almost endless horde of hostile alien robots who strongly oppose your attempts of colonizing their planet! Deluxe version includes the soundtrack!

    Why similar: Tower Defense 53.9%, Strategy 26.2%, Action 12.6%, Indie 7.3%

  27. #27 Castle Must Be Mine
    80% matchVery Positive90% of 239 reviews2018
    Dev: TheMiddleGray
    Windows

    Castle Must Be Mine is a KingdomRush-like tower defense game. But developed for VR. In addition to constantly collecting Coins to building and upgrading defensive towers, also need to make full use of all kinds of skills and props to stop the "enemies" into your castle.

    Why similar: Tower Defense 45.3%, VR 35.7%, Strategy 15.1%, Indie 3.9%

  28. #28 Tower Dominion
    76% matchVery Positive86% of 4,827 reviews2025
    Dev: Parallel 45 Games
    Windows
    Median: 11.7 hrsMean: 21.5 hrs≥1hr: 90%

    Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!

    Why similar: Tower Defense 34.8%, RTS 26.8%, Military 11%, Strategy 8.8%, War 8.6%

  29. #29 Bee Island
    77% matchVery Positive86% of 1,584 reviews2023
    Dev: Lemma Arts
    Windows
    Median: 2.2 hrsMean: 3.5 hrs≥1hr: 72%

    Take control of the hive and protect it from enemies. Build factories and defence, research technologies and, if necessary, use nuclear weapons, but do not let the enemies harm the queen!

    Why similar: Tower Defense 48.3%, Sci-fi 17.9%, Strategy 11.7%, Atmospheric 9.3%, 3D 6.4%

  30. #30 Iron Brigade
    79% matchVery Positive86% of 1,208 reviews2012
    Dev: Double Fine Productions
    Windows
    Median: 1.9 hrsMean: 7.5 hrs≥1hr: 63%

    Join The Mobile Trench Brigade and protect humanity from the evil Monovision menace!

    Why similar: Tower Defense 65.8%, Strategy 19.5%, Action 10.2%, Sci-fi 4.5%

  31. #31 CARNAGE OFFERING Tower Defense
    76% matchVery Positive90% of 306 reviews2023
    Dev: FuturtechPub: Nova's Army
    Windows

    The replicator robots are back! It's 2528. The machines are increasingly infecting the planets with genetically modified monsters. Challenge them and try to stop the onslaught. Upgrade buildings and heroes, mine resources, discover technology and fight to save humanity!

    Why similar: Tower Defense 46.7%, RTS 38.2%, Strategy 12.5%, Action 1.6%, Indie 1%

  32. #32 Artificial Extinction
    78% matchMostly Positive76% of 262 reviews2020
    Dev: 100Hr Games Inc
    Windows

    You have 9 days to find a safe place on the planet. Your ship is low on fuel and you have to land. Setup sentry guns around you to defend yourself while you collect more fuel for the ship. AI controlled Drones and Tanks attack you trying to find weaknesses in your defenses.

    Why similar: Tower Defense 50.2%, Strategy 15.9%, Sci-fi 13.3%, Action 8%, Survival 7.9%

  33. #33 Outpost: Infinity Siege
    74% matchMixed66% of 13,528 reviews2024
    Dev: Team RangerPub: Lightning Games
    Windows
    Median: 16.2 hrsMean: 41.5 hrs≥1hr: 91%

    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 an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.

    Why similar: Robots 26.1%, Tower Defense 20.5%, RTS 17%, Military 11.5%, Sci-fi 8.1%

  34. #34 XENOBREAKERS: Classic Tower Defense
    74% matchVery Positive86% of 83 reviews2025
    Dev: Couch Potato Studios
    Windows

    Defend Billy and his crew on their way to the extraction zone! You have been authorized to use the defense system. Protect them from giant bugs, malfunctioning droids and more...

    Why similar: Sci-fi 24.3%, Strategy 22.9%, Robots 20.7%, Tower Defense 8.9%, Futuristic 8.9%

  35. #35 Alien Marauder
    75% matchMixed63% of 341 reviews2021
    Dev: Vexan Studio
    Windows

    “Alien Marauder” is a real-time strategy game with survival and confrontation theme. In this game, you will be the leader to a treacherous alien planet, build and defend base to survive against the vexan waves. Make the right decision!

    Why similar: RTS 20.5%, Tower Defense 16.6%, Robots 14.4%, Real Time Tactics 12.6%, Military 12.6%

  36. #36 Stellarcraft The Prologue
    73% matchVery Positive91% of 76 reviews2024
    Dev: DreamStudios
    Windows

    Stellarcraft is a thrilling sci-fi tower defense game where you explore planets, gather resources, and fend off enemy threats—solo or in 4-player co-op. Play the free demo now! 🚀

    Why similar: Action RTS 27.8%, Tower Defense 24.2%, Real Time Tactics 14.7%, Sci-fi 9.6%, Survival 7.2%

  37. #37 Mind Unleashed
    77% matchMixed62% of 50 reviews2016
    Dev: Frost Earth StudioPub: IV Productions
    Windows
    Median: 3.3 hrsMean: 3.8 hrs≥1hr: 97%

    Mind Unleashed is a first person Sci Fi shooter game specifically designed for Virtual Reality. You are a robot that is trying hard to survive in a secret military base, inside a rocky mountain. Rocks and futuristic stuff will surround you in this epic challenge where you'll need to survive as long as possible, fighting hordes of robotic...

    Why similar: VR 41.4%, Action 15.8%, Futuristic 13.9%, Sci-fi 13%, Indie 9.9%

  38. #38 IDUN Prologue - Frontline Survival
    73% matchVery Positive89% of 81 reviews2025
    Dev: IDUN InteractivePub: Surefire.Games
    Windows · Mac · Linux

    Step into the arena with IDUN: Prologue, a thrilling slice of our full-length defense RTS where real-time strategy meets rogue-lite chaos. Fight your way through unique mission objectives with overwhelming swarms of enemies.

    Why similar: Tower Defense 24.5%, RTS 19.3%, Real Time Tactics 11.8%, Sci-fi 10.1%, Space 9.4%

  39. #39 Infested Planet
    73% matchVery Positive94% of 3,014 reviews2014
    Dev: Rocket Bear Games
    Windows
    Median: 3.1 hrsMean: 5.9 hrs≥1hr: 88%

    Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.

    Why similar: Tower Defense 35.7%, RTS 31.6%, Strategy 15.6%, Sci-fi 9.7%, Action 4.8%

  40. #40 ZeroZone2020
    75% matchVery Positive84% of 129 reviews2019
    Dev: HaDe GamesPub: My Way Games
    Windows

    Zero Zone 2020 is a classic Tower defense game where you will need to defend a home base from swarms of enemies

    Why similar: Tower Defense 53.7%, Real Time Tactics 23.5%, Strategy 15.5%, Action 7.4%

  41. #41 Axon TD: Uprising - Tower Defense
    71% matchVery Positive87% of 722 reviews2024
    Dev: Element Studios
    Windows
    Median: 3.6 hrsMean: 9.8 hrs≥1hr: 75%

    Axon TD lets you expand the map boundaries themselves. A huge arsenal of towers and a wide variety of enemies clash in a battlefield that grows to your whims. Engage in single, cooperative, and roguelite gameplay.

    Why similar: Tower Defense 26%, RTS 20.9%, Real Time Tactics 20.2%, Robots 11.7%, Sci-fi 8.6%

  42. #42 Rogue Command
    71% matchVery Positive92% of 546 reviews2024
    Dev: feneq
    Windows

    Classic RTS gameplay fused with a modern roguelite. Shape your build each run by assembling an evolving arsenal of powerful units and facilities. Harvest resources, build out your base. Raise your army and call down orbital strikes to overcome the forces threatening your survival.

    Why similar: Action RTS 26.7%, RTS 21.2%, Military 12.4%, Space 11.8%, Futuristic 10%

  43. #43 Fortified
    72% matchMostly Positive74% of 1,720 reviews2016
    Dev: Siege Camp
    Windows
    Median: 3.2 hrsMean: 4.9 hrs≥1hr: 89%

    Fortified is an explosive strategy shooter where players will defend the Earth against a menacing Martian invasion in the 1950s. Play as one-of-four pulp inspired heroes as they fight swarms of terrifying robots with an arsenal of Cold War era weapons and experimental technology.

    Why similar: Action 62%, Tower Defense 26.5%, Strategy 5.7%, Sci-fi 3.8%, Indie 2%

  44. #44 Mechs V Kaijus - Tower Defense
    70% matchVery Positive84% of 529 reviews2022
    Dev: Doble Punch Games
    Windows
    Median: 6.8 hrsMean: 13.2 hrs≥1hr: 83%

    Mechs V Kaijus is an addictive hardcore tower defense gameplay. In Mechs V Kaijus you take on the role of Commander of a powerful Mechs squadron. Improve your Mech, strategically place towers and factories on the battlefield. Deploy support units on the battlefield, and save our civilization.

    Why similar: Tower Defense 82.6%, Strategy 10.4%, Action 3.7%, Indie 3.3%

  45. #45 Iron Marines
    70% matchMostly Positive78% of 1,831 reviews2019
    Dev: Ironhide Game Studio
    Windows · Mac · Linux
    Median: 5.1 hrsMean: 11.4 hrs≥1hr: 87%

    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!

    Why similar: RTS 37.4%, Sci-fi 14.2%, Space 12.5%, Military 12.1%, Strategy 10.3%

  46. #46 Unstoppable Gorg
    72% matchMostly Positive79% of 306 reviews2012
    Dev: Futuremark
    Windows · Mac
    Median: 36 minMean: 6.3 hrs≥1hr: 40%

    Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!

    Why similar: Tower Defense 66.2%, Strategy 12%, Sci-fi 9.2%, Space 6.5%, Action 3.7%

  47. #47 PERIMETER: Legate Edition
    68% matchVery Positive92% of 139 reviews2024
    Dev: K-D LabPub: Association K-D Lab
    Windows · Linux

    Perimeter is a real-time strategy game with a destructible world. Utilize the environment for resource gathering and defense against enemies. Immerse yourself in the millennia-spanning history of the Chains of Worlds and lead a faction in the struggle for survival.

    Why similar: Action RTS 25%, RTS 20%, Robots 11.8%, Space 9.6%, Futuristic 8.6%

  48. #48 Iron Grip: Warlord
    70% matchVery Positive86% of 446 reviews2008
    Dev: ISOTX
    Windows
    Median: 48 minMean: 5.0 hrs≥1hr: 45%

    Iron Grip: Warlord invigorates tower defense with first-person shooter elements to give a new twist to the genre.It puts you in the heat of the battle, fighting off hordes of AI-controlled invaders. Play alone or with friends, in a diverse and challenging struggle to save all of Atelia.

    Why similar: Tower Defense 74.9%, Action 16.6%, Indie 8.5%

  49. #49 Dome Keeper
    65% matchVery Positive92% of 19,233 reviews2022
    Dev: BippinbitsPub: Raw Fury
    Windows · Mac · Linux
    Median: 4.1 hrsMean: 10.8 hrs≥1hr: 87%

    Defend against waves of alien monsters in this unique roguelike action miner. Dig for resources, collect useful gadgets, and upgrade equipment to increase odds of survival – just hurry back before your dome is destroyed!

    Why similar: Tower Defense 39.3%, Space 23.9%, Sci-fi 20.4%, Atmospheric 8.4%, Action 8%

  50. #50 Stellar Survivor
    71% matchMixed66% of 175 reviews2019
    Dev: Sticks & Stones
    Windows

    Stranded on an alien planet, you must defend your Powercore! Use your weapons to fight hordes of alien enemies and strategically use traps in this new FPS tower-defense survival game!

    Why similar: Tower Defense 31.2%, RTS 15.9%, Strategy 12.2%, Space 10.5%, Sci-fi 10.2%

  51. #51 Defense Grid: The Awakening
    67% matchOverwhelmingly Positive96% of 5,303 reviews2008
    Dev: Hidden Path Entertainment
    Windows
    Median: 4.6 hrsMean: 15.1 hrs≥1hr: 91%

    Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.

    Why similar: Tower Defense 72.2%, Strategy 11%, Sci-fi 10.9%, Futuristic 3.8%, Indie 2.1%

  52. #52 Codex of Victory
    69% matchMixed69% of 397 reviews2017
    Dev: Ino-Co PlusPub: AKPublish pty ltd
    Windows · Mac · Linux
    Median: 4.8 hrsMean: 6.1 hrs≥1hr: 96%

    In this sci-fi turn-based strategy with real-time base-building elements, you’ll be defending human territories against the transhuman Augments. Expand your HQ, and manufacture and upgrade an army of advanced drones to wage interplanetary war for Humanity!

    Why similar: Robots 32.1%, Space 26.8%, Sci-fi 19%, Strategy 14%, 3D 4.3%

  53. #53 Towerful Defense: Prologue
    66% matchVery Positive88% of 75 reviews2024
    Dev: Mini Fun Games
    Windows · Mac · Linux

    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.

    Why similar: Tower Defense 29.4%, Action RTS 28.6%, RTS 23.3%, Strategy 8.4%, Survival 6.6%

  54. #54 Repel The Rifts
    64% matchVery Positive86% of 313 reviews2025
    Dev: RefinedBearGamesPub: Goblinz Publishing
    Windows · Linux

    Repel the Rifts is a roguelite tower defense game where you lead a commander through an alien world, uncovering new terrain each wave, drafting powerful upgrades, and constructing defenses to hold back the chaos.

    Why similar: Tower Defense 48.8%, Space 22%, Sci-fi 18.3%, Strategy 9.4%, Indie 1.4%

  55. #55 Armed to the Gears
    69% matchMixed63% of 212 reviews2020
    Dev: Deonn Games
    Windows
    Median: 3.3 hrsMean: 3.8 hrs≥1hr: 94%

    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!

    Why similar: Tower Defense 32%, RTS 31.4%, Robots 16.1%, Futuristic 8.4%, Sci-fi 8.1%

  56. #56 Mech Fortress
    64% matchVery Positive85% of 216 reviews2026
    Dev: Some Sugar Studio
    Windows

    Mech Fortress is a sci-fi tower defense game where each turret has unique mechanics. You can freely place them on a 5×5 grid, and your goal is to eliminate all enemies!

    Why similar: Tower Defense 67.3%, Strategy 16.8%, Sci-fi 15.9%

  57. #57 Cartridge Defense
    67% matchVery Positive92% of 100 reviews2022
    Dev: Out Gaming
    Windows

    Cartridge Defense is a tower defense game with over 300 distinct collectible cards that you will use to create your own decks to defend against robots in the cyberpunk inspired future. Play cards (cartridges) to spawn towers, upgrades, special abilities and more in a campaign or rogue-like mode.

    Why similar: Tower Defense 45.4%, Futuristic 18.2%, Sci-fi 17.3%, Strategy 11%, Atmospheric 5.7%

  58. #58 Galactic Rangers VR
    68% matchMostly Positive79% of 70 reviews2019
    Dev: DGMA
    Windows
    Median: 3.0 hrsMean: 3.9 hrs≥1hr: 85%

    Galactic Rangers VR is a first-person space action VR game, deeply immersive, just as arcade shooter should be. Grab your pair of blasters and fight through endless waves of enemies for as long as you can!

    Why similar: VR 21.5%, Robots 19.1%, Tower Defense 16.7%, Space 15.5%, Futuristic 11.4%

  59. #59 Zombie City Defense 2
    69% matchMostly Positive70% of 208 reviews2016
    Dev: Mozg Labs
    Windows · Mac · Linux
    Median: 3.1 hrsMean: 5.6 hrs≥1hr: 90%

    In a near future, the world has been devastated by a virus turning humanity into zombies. You are Iron Corps, the last defense of civilization traveling the world to find resources, help people and find answers. Will you survive long enough?

    Why similar: Tower Defense 43.3%, Strategy 19.9%, Military 15.7%, War 10.5%, Action 6.6%

Based on tag similarity + player behavior
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