- #1 Defense Task Force - Sci Fi Tower Defense
97% matchMixed66% of 53 reviews2018
Dev: ChillX Ltd
Windows
Defense Task Force Featuring Large Scale Procedurally Generated Tower Defense Battles with FPS Quality Visuals and Infinite Waves. 10 tower types, with different attacks , 3 levels plus boosts. 25 Enemy alien species: Regulars, Swarmers, Racers, Cloakers, Healers, Boss Units and Spawners.
Why similar: Tower Defense 57.6%, Strategy 19.5%, Sci-fi 14.8%, Indie 8.1%
- #2 Autothysis
96% matchNo user reviews
Dev: Somniare Studios
Windows · Mac
Autothysis is a first-person tower defense game where strategy meets precision. Deploy turrets, manage resources, and fight swarms of insectoid enemies. Target weak points to shatter foes while upgrading defenses to survive escalating waves. Can you withstand the oncoming horde?
Why similar: Tower Defense 23.4%, Aliens 12.6%, Survival 10.9%, FPS 10.1%, Space 9.6%
- #3 Zerion 12
96% match1 user reviews100% of 1 reviews2025
Dev: Gray Mantis
Windows
A sci-fi tower defense game. Build an army of towers to stop waves of a lured alien species called Zektid's.
Why similar: Tower Defense 26.3%, Real Time Tactics 17%, Aliens 15.2%, Strategy 12.6%, Space 8.6%
- #4 Space Base Defense
95% match3 user reviews33% of 3 reviews2025
Dev: Morgenmiddag
Windows · Mac
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?
Why similar: Tower Defense 20.9%, Real Time Tactics 14.1%, Aliens 12.9%, Space 9.5%, Resource Management 9.1%
- #5 Space Nature Attack Tower Defense
94% matchPositive92% of 13 reviews2024
Dev: Lead Games
Windows
Space Nature Attack TD is a tower defense where you can level up and customize tower stats and elements to your liking! Fend off various types of alien creatures across many different sci-fi planet themed maps, biomes, and difficulties!
Why similar: Tower Defense 34.8%, Aliens 15%, Strategy 13.7%, Real Time Tactics 10.7%, Space 9.9%
- #6 Galaxy Defenders (Classic TD)
94% matchNo user reviews100% of 1 reviews2025
Dev: Galaxy Developer
Windows
A classic tower defense game set in space! Build and upgrade towers, defend your portal from waves of alien invaders, and outsmart evolving threats across handcrafted and procedural maps.
Why similar: Tower Defense 29.2%, Space 12.6%, Real Time Tactics 11.1%, Aliens 11%, Strategy 9.7%
- #7 SENTRY
93% 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 26.5%, Aliens 13.4%, Survival 11.9%, FPS 11.7%, Space 10.6%
- #8 D.A.D.S.
92% matchNo user reviews
Dev: Golden Character Design
Windows · Mac · Linux
Use your special ops units to construct base facilities and towers to protect them from the ever-increasing threat of alien invaders in this Tower Defense game with a city-building element! Research their weaknesses and develop defenses before mankind runs out of time.
Why similar: Tower Defense 24.6%, Real Time Tactics 16%, Resource Management 14.1%, Time Management 12.5%, Aliens 10.5%
- #9 Celestial Wardens
91% matchNo user reviews2025
Dev: Crimson Mantis Interactive
Windows
Celestial Wardens is a sci-fi tower defense game where you command a lone spaceship to defend a planet under siege. Survive waves of enemies, build turrets, upgrade your ship, and manage your planet to prevent total annihilation.
Why similar: Tower Defense 32.8%, Space 14.8%, Management 13.5%, Aliens 10.3%, Strategy 9.8%
- #10 Galactic Siege
91% match1 user reviews100% of 1 reviews2025
Dev: 2MGames
Windows
Defend your base across four unique worlds in this 3D tower defense game. Battle waves of monsters, conquer 20 campaign levels, and climb the global leaderboard in the endless mode.
Why similar: Tower Defense 34.9%, Strategy 13%, Space 10.3%, Management 10.2%, Resource Management 8.9%
- #11 Spaceships and Cellular Automata
90% matchNo user reviews2026
Dev: Kcorbco
Windows
Spaceships and Cellular Automata is a tower defense game set in space! Place different towers to defend your ship against the waves of aliens. The enemies are simulated based on Conway's Game of Life. Even just one of your bullets is enough to cause a destabilizing chain reaction to destroy them!
Why similar: Tower Defense 36.9%, Space 19%, Aliens 13.9%, Strategy 13.2%, Arcade 7.6%
- #12 Crystal Guardian
89% match1 user reviews0% of 1 reviews2024
Dev: AKDasan
Windows
Crystal Guardian is a tower defense game featuring survival and time control elements. Defend the crystal against enemies from different biomes every night, and during the days, gather resources from various biomes to alleviate hunger and thirst, aiming to survive until the 100th day.
Why similar: Tower Defense 32.6%, Time Management 18.7%, Strategy 16.4%, Survival 13.1%, Resource Management 11.6%
- #13 Rise of Mutant Swarms
89% matchNo user reviews
Dev: Feative Studios
Windows
Rise of Mutant Swarms is a strategy survival tower-defense game where you defend the base against waves of evolving mutant enemies. Place and upgrade turrets, adapt to enemy abilities, and make critical decisions as the pressure rises with every wave.
Why similar: Tower Defense 34.6%, Aliens 15.6%, Strategy 13.3%, Sci-fi 11%, Real Time Tactics 10.6%
- #14 Artificial Extinction
88% 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 36.2%, Strategy 12.1%, Resource Management 11.1%, Survival 9.7%, FPS 9.2%
- #15 Swarming Planet
87% match7 user reviews57% of 7 reviews2021
Dev: RedZyrro
Windows
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.
Why similar: Tower Defense 27.4%, Aliens 20.9%, Real Time Tactics 15%, Sci-fi 9.5%, Space 9.5%
- #16 Quad Dice Defence
86% match5 user reviews20% of 5 reviews2022
Dev: Chessmat
Windows
This is a tower defense game where you use four dice to build a turret. The rolls of the dice are the ability value of "number of shots", "time reload", "damage(& range)" and "magazine". Try your best to clear all 40 stages, which are getting more and more difficult!
Why similar: Tower Defense 41.9%, Real Time Tactics 21.1%, Strategy 16.1%, Management 13.7%, Casual 2.8%
- #17 Unstoppable Gorg
86% 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 58.9%, Strategy 11.3%, Aliens 9.7%, Sci-fi 7.7%, Space 5.6%
- #18 Tep The Destroyer TD
85% matchMostly Positive71% of 49 reviews2022
Dev: Malignant Potato
Windows
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!
Why similar: Tower Defense 25.2%, Aliens 17.5%, Resource Management 12.2%, Space 11.5%, Sci-fi 9.8%
- #19 QIMEN Tower Defense
84% matchPositive97% of 30 reviews2025
Dev: Tianjin Wuhua Network Technology Co., Ltd.
Windows
Players take on the role of a patrol officer. By chance, you uncover the monster invasion and get involved in battles to defend against the monsters, you can utilize a variety of strange Qimen mechanisms, Coupled with the unique skills they gradually acquire, can you safeguard this continent?
Why similar: Tower Defense 38.1%, Real Time Tactics 15.2%, FPS 13.3%, Strategy 12.8%, Strategy RPG 12.3%
- #20 Unearthing Invasions
84% match5 user reviews100% of 5 reviews2024
Dev: Aquarius Max
Windows · Mac · Linux
A 3d tower defense game set in space. Protect the last resource outposts from the ongoing Alien attacks! Can you hold out in these ever increasing difficult waves of enemies and protect the last of your resources and Energy?
Why similar: Tower Defense 32.5%, Aliens 16.9%, Space 13.4%, Sci-fi 9.9%, Arcade 9.4%
- #21 Alpha Ceti TD
83% matchNo user reviews
Dev: Alpha DevelopmentPub: HASH CLASH
Windows · Linux
Classic Tower Defense meets space exploration. Build turrets on mining platforms, harvest enemies to build more defenses, and mine Dark Energy to travel the stars. As a sentient AI, you must upgrade your tech, scan planets, and find a new home for humanity before Earth fades away.
Why similar: Tower Defense 29.3%, Real Time Tactics 23.2%, Strategy 11.7%, Space 9.1%, Management 8.7%
- #22 Space Run
82% matchVery Positive85% of 2,123 reviews2014
Dev: Passtech GamesPub: Focus Entertainment
Windows · Mac · Linux
Median: 5.1 hrsMean: 7.2 hrs≥1hr: 93%
Space Run is a «real-time spaceship construction strategy game». Space Run takes the well-known Tower Defense-style gameplay and twists it, challenging you to manage and protect a spaceship and its cargo against the hazards of deep space!
Why similar: Tower Defense 52.3%, Space 22.9%, Strategy 12.3%, Sci-fi 8.3%, Indie 3.4%
- #23 Medieval Survivors: Village Defense
82% matchNo user reviews
Dev: MadDevs Studio
Windows
A 3D first-person action-strategy game with a fresh take on tower defense. Build and manage your village by day, then fight alongside it to survive intense night waves.
Why similar: Real Time Tactics 19.7%, Tower Defense 19%, Survival 17.6%, Strategy RPG 13.4%, Strategy 11.4%
- #24 The Unearthened - Complete Edition
81% match4 user reviews25% of 4 reviews2023
Dev: B.V.SPub: Retro Box Game Studio
Windows · Linux
Build & defend a small remote mining base on Taichin XI from the alien hordes. Deploy defenses, upgrade your turrets and get ready for the nightfall. The Unearthened is a classic Idle Tower Defense game where you build towers and prepare for the invasion.
Why similar: Tower Defense 22.6%, Aliens 17.2%, Resource Management 14.8%, Idler 14.3%, Management 9.2%
- #25 Wrecker II, The Wreckening
80% match3 user reviews100% of 3 reviews2025
Dev: Sleepless Inc.
Windows
Year 2425, humanity colonized the exoplanet named SACH-041840. But then, in the 55th year "they" came; No one knows who or what controls them, but what is known is that if they reach the colony proper, it will be annihilated. It is up to you to bring the WRECKONING upon them!
Why similar: Tower Defense 28.1%, Aliens 13.3%, Space 10.2%, Survival 8.7%, Strategy 8.7%
- #26 2Week : Death World
81% matchMostly Positive77% of 13 reviews2022
Dev: HAIBOKU WorkshopPub: HAIBOKUWorkshop
Windows
The world was filled with darkness. Gather supplies and people, build a wall, and defend yourself against the emissaries of the underworld! 2Week:DeathWorld is a side-scrolling strategy game drawn in dots.
Why similar: Tower Defense 38%, Real Time Tactics 23.8%, Strategy 19.2%, Survival 14.5%, Indie 2.8%
- #27 Invader TD
79% matchPositive85% of 33 reviews2022
Dev: Creativer Game StudioPub: White Rose Games
Windows
Invader TD is a side scroller tower defense, where the player is in the role of an alien race with the purpose of infecting and dominating the earth, you must protect yourself from the attacks of the humans, who are trying to destroy you.
Why similar: Tower Defense 30.7%, Aliens 23%, Resource Management 17.5%, Strategy 8.9%, Sci-fi 7.6%
- #28 Asteroid Core
78% matchMixed67% of 39 reviews2024
Dev: JOZGamerPub: JOZGames
Windows
You are isolated on a small meteor and need to build a fire to escape before being destroyed by aliens. Use your limited space to create machines and obtain more and more resources. Enjoy this mix of puzzles, tower defense and incremental gameplay.
Why similar: Tower Defense 29.9%, Idler 21.3%, Space 12.9%, Resource Management 12.6%, Management 10.5%
- #29 依灵修仙
78% match3 user reviews33% of 3 reviews2026
Dev: 依灵工作室
Windows
Tower defense with the protagonist as the main tower, aided by auxiliary structures. Focus on customizing the hero's skills, formations, and artifacts to develop deep strategic synergy between progression systems.
Why similar: Tower Defense 32.5%, Idler 23.3%, Real Time Tactics 21.6%, Survival 14.4%, Strategy 7.5%
- #30 Sphere Invasion
79% match2 user reviews0% of 2 reviews2020
Dev: Space and Frogs
Windows
Sphere Invasion is Sci-Fi Tower Defence. Build your own road and defend it with 7 unique towers.
Why similar: Tower Defense 30%, Real Time Tactics 20.3%, Space 13.4%, Resource Management 12.5%, Strategy 9.7%
- #31 Under the Ruin
77% match2 user reviews100% of 2 reviews2025
Dev: YETS
Windows
Lead a squad into the ruins, scavenging resources while fending off relentless swarms. In this unique, expansion-style tower defense game, explore regions, grow your forces, and stop the cataclysm to save humanity.
Why similar: Tower Defense 25.3%, Resource Management 14.2%, Strategy RPG 12.8%, Survival 12.3%, Real Time Tactics 12.2%
- #32 银河战争一(Galactic Wars One)
77% match1 user reviews100% of 1 reviews2024
Dev: hidden dragon独游
Windows
A tower defense strategy science fiction game, in the future era, when aliens invade the solar system, players need to build various turrets to resist alien attacks and guard the Milky Way and solar system.
Why similar: Tower Defense 38.2%, Aliens 16.7%, Strategy 15%, Space 11.1%, Casual 6.4%
- #33 NodalBastion
76% 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 39.5%, Idler 23.5%, Resource Management 22.8%, Strategy 9.8%, Casual 1.6%
- #34 Sanctum 2
76% matchVery Positive90% of 14,356 reviews2013
Dev: Coffee Stain StudiosPub: Coffee Stain Publishing
Windows · Mac · Linux
Median: 2.8 hrsMean: 6.7 hrs≥1hr: 85%
Sanctum 2 is the sequel to the world’s first Tower Defense/FPS hybrid game. Pick from four unique character classes and embark on a mission to protect the oxygen-producing Cores from hordes of deadly aliens who are threatened by their existence.
Why similar: Tower Defense 50.3%, FPS 16.2%, Strategy 7.8%, Sci-fi 6.8%, Aliens 6%
- #35 Lore of Terra TD
75% matchNo user reviews
Dev: pencil_gamingstudio
Windows
Bad coffee. Boredom. And now—war. Southern forces have invaded the North in a dangerously curious conflict. Use your wits in Lore of Terra, a handcrafted tower defense game with charm, chaos, quirky characters, 9 continents, and 80+ unique allies and foes.
Why similar: Tower Defense 35.8%, Real Time Tactics 23.1%, Strategy 18.2%, Resource Management 14.9%, 3D 4.4%
- #36 Abyss Manager Idle
73% matchVery Positive97% of 117 reviews2026
Dev: D4 Laboratory
Windows
This is a short idle tower defense game that players can complete to 100% in 2 hours.Abyss Manager is an idle tower defense game where players need to assign jobs to various characters, collect resources, recruit and train characters, and excavate more floors to unlock further mechanics.
Why similar: Tower Defense 28.2%, Time Management 21.5%, Idler 20.6%, Strategy 11.6%, Resource Management 10%
- #37 ZaciSa: Idle Defense!
75% 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 31%, Idler 19.1%, Space 13.4%, Survival 10.1%, Strategy 8.5%
- #38 IdleTowerDefense
74% match1 user reviews0% of 1 reviews2024
Dev: CMY
Windows
This game features 3D modeling scenes and top-notch controls. Combining Buddha-style placement gameplay with tower defense, it challenges your strategy. Summon warriors, build towers, and establish defenses for exciting battles.
Why similar: Tower Defense 27.6%, Time Management 22.6%, Strategy 12%, Resource Management 7.5%, Management 6.6%
- #39 Terra Request
73% match2 user reviews50% of 2 reviews2025
Dev: Heavy Line Software
Windows
Take the reins as a planet manager. Build up the planet's surface and orbit, appease the three factions, and take advantage of special abilities. But watch out, if you're not careful, you might just lose control.
Why similar: Time Management 25.8%, Strategy 15.6%, Resource Management 11.1%, Arcade 11.1%, Management 10.9%
- #40 Stellar Survivor
74% 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 26.7%, Aliens 16.7%, Survival 12.3%, Strategy 11.1%, Space 8.7%
- #41 The Wildwatch
72% matchNo user reviews
Dev: Kettle Studios
Windows
Experience a first-person tower defense: stand beside a self-firing tower, earn Gold to upgrade Attack, Defense, and Support stats, and survive waves of Fire Piglets and more. Enjoy vibrant visuals and engaging gameplay.
Why similar: Tower Defense 35.1%, Idler 20.1%, Strategy 17.1%, Resource Management 10.2%, Survival 9.5%
- #42 Aliens falling from the Sky?
72% matchNo user reviews
Dev: Starcradle Studio
Windows · Mac · Linux
Aliens Falling from the Sky? reimagines tower defense with intense action and tactical depth. Build, upgrade, and combine powerful towers to stop relentless alien waves — because somehow, saving the world is your problem now.
Why similar: Tower Defense 41%, Aliens 22.9%, Space 19.2%, Strategy 11.5%, Indie 3.4%
- #43 Beware Planet Earth
73% matchMostly Positive72% of 336 reviews2014
Dev: Lightmare StudioPub: Jumping Ram
Windows
Median: 4.2 hrsMean: 5.0 hrs≥1hr: 95%
Beware Planet Earth! is a beguiling mix of classic tower defense and time management coming to PC via Steam for the first time. Save your cows from the Martian invasion by building an effective defense using towers, traps and objects, and also by firing your Zapper directly at the invading force of little green men!
Why similar: Tower Defense 45.6%, Aliens 19.5%, Strategy 9.8%, Sci-fi 7.4%, Space 5.6%
- #44 Crystal Nexus: Alien Siege
71% matchNo user reviews
Dev: Rabbit Hole Creations
Windows
Rule the battlefield from orbit! Crystal Nexus: Alien Siege is a hybrid deckbuilding tower-defense game that puts you in charge of outposts on hostile alien planets. Look down on the battlefield from your space station and deploy towers, weapons, and buffs from the cards you’ve collected!
Why similar: Tower Defense 26.7%, Real Time Tactics 19.2%, Space 13.9%, Survival 13.2%, Aliens 8.4%
- #45 Idle Monster TD
70% matchMostly Positive72% of 841 reviews2021
Dev: Swell Games LLC
Windows · Mac
Median: 6.6 hrsMean: 164.6 hrs≥1hr: 74%
An endless Tower Defense game of epic Monsters vs evil War Machines. Unlock and upgrade tons of unique elemental Monsters (Water, Air, Earth, and Fire) to defend your home from an infinite swarm of robots. Strategize the most effective placement of Monsters to synergize their elemental abilities.
Why similar: Tower Defense 31.8%, Idler 20.5%, Resource Management 14.9%, Time Management 12.6%, Strategy 9.9%
- #46 Sanctum
71% matchVery Positive89% of 3,340 reviews2011
Dev: Coffee Stain StudiosPub: Coffee Stain Publishing
Windows · Mac
Median: 1.8 hrsMean: 7.4 hrs≥1hr: 62%
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
Why similar: Tower Defense 54.2%, FPS 14.2%, Strategy 9.2%, Sci-fi 6.6%, Female Protagonist 5.6%
- #47 Grid Creeps
71% match5 user reviews100% of 5 reviews2019
Dev: Dustin Bledsoe
Windows
Grid Creeps- a Game about Tactics and Strategy which Combine Elements of Tower Defense, Base Building and Resource Management in an Interesting new way. Protect your Headquarters and survive as many Waves of Creeps as possible!
Why similar: Tower Defense 29.9%, Strategy 21.8%, Resource Management 17.1%, Management 11.6%, Casual 10.1%
- #48 We Are the Universe
70% match1 user reviews100% of 1 reviews2023
Dev: Uncle Grouch Gaming
Windows
Sci-fi tower defense where you create your own maze, manage drones and power levels, and harvest for resources. Upgrade your turrets, buildings and ground units. Upgrade and buy new vehicles and motherships.
Why similar: Tower Defense 49.5%, Sci-fi 19.2%, Strategy 16.5%, 3D 6.6%, Indie 5%
- #49 System Status: SuperCritical
70% matchNo user reviews
Dev: KliksutiGames
Windows
Defend your base by placing towers strategically, forming interconnected systems that depend on one another. Adapt your strategy to different environments and enemy waves, exploiting their weaknesses. In System Status: SuperCritical, resources are scarce and critical failure is always an option.
Why similar: Tower Defense 33.3%, Real Time Tactics 18.6%, Space 16.8%, Strategy 12.5%, Arcade 7.6%
- #50 Swarmex
69% 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 29.7%, Idler 15.4%, Time Management 13.4%, Strategy 12.7%, Arcade 9.8%
- #51 Bug Bait
68% match1 user reviews100% of 1 reviews2025
Dev: Chimera Unchained
Windows · Linux
Defend your base against relentless hordes of bugs in this single-player survival tower defense game. Strategically build and upgrade your defenses, manage vital resources, and adapt to ever-evolving threats. Can you outsmart the infestation and survive the chaos?
Why similar: Tower Defense 40.8%, Resource Management 21.2%, Survival 16.9%, Strategy 11.7%, Casual 3.7%
- #52 Pixel Orbit
69% 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 31.1%, Idler 21.5%, Strategy 11.5%, Space 10.2%, Resource Management 9.1%
- #53 Revenge of the Titans
69% matchVery Positive82% of 1,250 reviews2011
Dev: Puppygames
Windows · Mac · Linux
Median: 2.1 hrsMean: 4.4 hrs≥1hr: 82%
The ultimate mash-up of Real-time Strategy and Tower Defense!
Why similar: Tower Defense 58.4%, Strategy 13.1%, Sci-fi 9.4%, Aliens 9.4%, Indie 5%
- #54 Bumper Blitz TD
68% matchNo user reviews
Dev: Ragnarok StudiosPub: Mad Data Games
Windows · Mac · Linux
Bumper Blitz TD redefines tower defense with gravity-powered physics and dynamic gameplay. Build, upgrade, and bounce enemies away in this thrilling fusion of strategy and action!
Why similar: Tower Defense 44.9%, Aliens 19.9%, Space 12.8%, Strategy 11.5%, Casual 5.7%
- #55 Space Cycle
66% 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 41.7%, Space 22.5%, Sci-fi 14.7%, Strategy 12.2%, Indie 4%
- #56 castle idler
67% matchNo user reviews2026
Dev: Soy Boy Games
Windows · Mac
castle idler is a short, relaxing incremental tower defense game with no waves. upgrade towers, collect coins, and unlock powerful prestige upgrades to defend your castle.
Why similar: Tower Defense 33%, Idler 24.8%, Management 10.6%, Strategy 9.6%, Resource Management 9%
- #57 Alien Worms Invasion
68% matchMixed69% of 26 reviews2018
Dev: Mímir Studio
Windows
Alien Worms Invasion is a game of futuristic exploration and tower defense. In the game, you can explore unknown areas and build bases and units to defense the attack of the worms which would be killed in the end。
Why similar: Tower Defense 45.3%, Strategy 21.9%, Survival 19.5%, Indie 10.1%, Singleplayer 3.1%
- #58 Gregg: Tower Defence
66% matchPositive84% of 19 reviews2024
Dev: Resident Egg Studios
Windows
Play as Gregg. Gather, build and destroy your slimy enemies in this thrilling pixel art tower defence!
Why similar: Tower Defense 33%, Real Time Tactics 19.9%, Strategy 15.5%, Time Management 14.8%, Survival 8.3%
- #59 Radical Tower Defense
67% matchNo user reviews
Dev: NewNull
Windows
In Radical Tower Defense, harness shifting core chips to forge a unique steel defense. Each choice reshapes your combat style. Unlock architectures, explore chip synergies, ignite tactical reactions. Don’t just defend—become a blade to break formations, strike the heartland, crush the enemy lair!
Why similar: Tower Defense 40.6%, Real Time Tactics 22.6%, Resource Management 18.1%, Strategy 16.3%, Indie 2.5%
- #60 Galaxy Idle Clicker
64% matchMostly Positive75% of 1,122 reviews2025
Dev: SoehnlePub: TimeLost Gaming
Windows
Median: 12.1 hrsMean: 333.3 hrs≥1hr: 71%
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 21.8%, Resource Management 19.7%, Space 17.5%, Time Management 11.5%, Management 7.4%