- #1 Radiant Defense
97% matchVery Positive83% of 146 reviews2014
Dev: Hexage
Windows
MILLIONS OF ALIENS WILL DIE!Radiant Defense is a tower defense game set in a vibrant universe invaded by countless alien hordes.Build your space fortress any way you wish, set up wide variety of weapons and traps and let the invasions begin!
Why similar: Tower Defense 30.6%, Wargame 18.9%, 2.5D 12.5%, Strategy 11.1%, Cartoon 8.1%
- #2 Swarm Queen
96% matchVery Positive93% of 378 reviews2017
Dev: Helmi Bastami
Windows
Median: 4.0 hrsMean: 5.0 hrs≥1hr: 85%
A quick-to-learn but challenging real-time strategy game where you spawn an army of space-bugs that control themselves.
Why similar: RTS 23.1%, Auto Battler 20.6%, 2.5D 16.8%, Wargame 11.6%, Aliens 10.9%
- #3 Operation: Polygon Storm
96% matchMostly Positive71% of 285 reviews2024
Dev: Toxic Studio
Windows
Median: 48 minMean: 5.3 hrs≥1hr: 49%
A fastpaced, military tug-of-war game with minimal micromanagement. Choose and deploy from a mix of specialized military units to overwhelm the enemy. Experiment with a huge variety of unit compositions, synergies, abilities, and upgrades to lead your army to victory!
Why similar: Auto Battler 25%, Wargame 19.8%, Tower Defense 17.7%, RTS 17%, Roguelite 10.2%
- #4 Infested Planet
95% 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%, RTS 31.6%, Strategy 18.2%, Aliens 7.7%, Sci-fi 5.8%
- #5 Northend Tower Defense
94% matchMostly Positive75% of 1,398 reviews2024
Dev: Northend Games
Windows
Median: 1.4 hrsMean: 3.5 hrs≥1hr: 58%
Jump into a realtime strategy, action filled battlefield, deploy relentless soldiers, unlock powerful troops and vehicles, upgrade your army, decimate the enemy. If that's not enough, jump into a chaotic Zombie mode, with traps, fun upgrades, and a new gameplay!
Why similar: Auto Battler 44.6%, Tower Defense 36.4%, Strategy 11.9%, Simulation 7.1%
- #6 Xeno Command
94% matchVery Positive84% of 55 reviews2022
Dev: ChillyRoomPub: ChillyRoom
Windows
Defend galaxy against Alien invasion in the RTS offline game with roguelike fun
Why similar: Wargame 28%, Tower Defense 24.6%, RTS 23.4%, Strategy 8.3%, Aliens 8.1%
- #7 Beat the Humans
93% matchVery Positive80% of 61 reviews2025
Dev: Dochungryest
Windows
Beat the Humans is the turn-based tactical strategy game. Here you lead an army of aliens against invaders from the human race. Collect your squad, protect planets, strengthen your army with equipment and look for allies if you want to survive and win.
Why similar: Tactical RPG 31.3%, Strategy RPG 28.1%, Roguelite 12.6%, RPG 12.5%, Strategy 12.5%
- #8 Strain Tactics
92% matchVery Positive85% of 239 reviews2017
Dev: Touch Dimensions Interactive
Windows
Median: 3.0 hrsMean: 10.3 hrs≥1hr: 63%
Strain Tactics is a real-time-with-pause tactical game, where you command a squad of soldiers to liberate earth from an alien infestation. Using your helibase, deploy your custom squad and provide air support. Remember to keep your crew sane and motivated while staying clear of alien contamination!
Why similar: Strategy 40.6%, Aliens 27.5%, RPG 17.6%, Sci-fi 14.3%
- #9 Iron Marines Invasion
91% 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: RTS 53.9%, Strategy 16%, Sci-fi 12.1%, Cute 11.1%, 2D 6.8%
- #10 Bees vs Zombees
91% matchVery Positive89% of 99 reviews2024
Dev: DeadpixelPub: Nuntius Games
Windows
A fast-paced roguelike tower defense where you choose your Queen Bee with unique skills and the Artisan to build turrets and cast powerful spells to defend your hive through regions infested with zombees. Face bosses with insane mechanics and survive the Zumbeecalypse!
Why similar: Tower Defense 23.3%, RTS 23%, Wargame 22.3%, Roguelite 13%, Strategy 7.9%
- #11 Starship Troopers: Terran Command
89% matchVery Positive87% of 11,704 reviews2022
Dev: The ArtistocratsPub: Slitherine Ltd.
Windows
Median: 3.4 hrsMean: 10.2 hrs≥1hr: 83%
Lead the Mobile Infantry in this RTS game set in the Starship Troopers film universe. Balance your army composition with a diverse set of unit types, overcome line-of-sight and line-of-fire challenges through tactical positioning, and use special abilities to smash the Arachnid hordes!
Why similar: RTS 43.7%, Strategy 19%, Wargame 18.2%, Tower Defense 7.7%, Sci-fi 5.9%
- #12 Defend Your Life: TD
90% matchMostly Positive80% of 1,092 reviews2015
Dev: Alda Games
Windows · Mac · Linux
Median: 4.3 hrsMean: 6.4 hrs≥1hr: 96%
Defend Your Life! Is tower defense set in human body where players are fighting against villain hordes of viruses and bacteria. Levels and units correspond to reality of human anatomy.
Why similar: Tower Defense 35.7%, RTS 29.1%, Cartoon 12.5%, Strategy 11.7%, Cute 6%
- #13 No Creeps Were Harmed TD
89% 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 54.7%, Aliens 16.9%, Strategy 16.6%, Sci-fi 11.8%
- #14 Tower Dominion
86% 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 27.9%, RTS 21.8%, Auto Battler 21.2%, Roguelite 11.9%, Strategy 8.4%
- #15 Towerful Defense: Prologue
87% 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: Auto Battler 27.2%, Tower Defense 20.8%, RTS 16.8%, Roguelite 11.7%, Strategy 7.1%
- #16 Spaceland: Sci-Fi Indie Tactics
88% matchMostly Positive77% of 409 reviews2019
Dev: Tortuga Team
Windows
Median: 3.1 hrsMean: 5.4 hrs≥1hr: 82%
Incredibly dynamic turn-based strategy, reviving the traditions of the old school tactics. Lead a team of the most desperate fighters, destroy alien monsters and uncover the secrets of the lost planet.
Why similar: Tactical RPG 28.5%, Strategy RPG 28%, Aliens 14.1%, RPG 11.7%, Strategy 9.8%
- #17 Defend Earth: Xenos Survivors
85% matchVery Positive80% of 56 reviews2023
Dev: ReijaPub: indie.io
Windows
You are Earth's last line of defense in a relentless alien invasion. Experience intense top-down roguelite action across diverse landscapes, fighting invaders with a versatile arsenal. Outsmart, outgun, and survive your foes. Every run increases the challenge - so adapt, evolve, dominate!
Why similar: Roguelite 37.9%, Aliens 26.2%, RPG 21%, Sci-fi 14.9%
- #18 Anomaly: Warzone Earth
84% matchVery Positive87% of 4,668 reviews2011
Dev: 11 bit studios
Windows · Mac · Linux
Median: 2.4 hrsMean: 11.0 hrs≥1hr: 88%
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Why similar: Tower Defense 42.5%, Strategy 28.5%, RTS 15%, Sci-fi 8.1%, Aliens 5.8%
- #19 Defense Task Force - Sci Fi Tower Defense
86% 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 53.6%, Strategy 20.4%, Simulation 17.1%, Sci-fi 8.9%
- #20 Iron Marines
84% 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 46.2%, Strategy 15%, Aliens 14.9%, Sci-fi 10.5%, Cartoon 7.8%
- #21 XENOBREAKERS: Classic Tower Defense
82% 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: Comic Book 39.3%, Strategy 25.2%, Aliens 13.8%, Sci-fi 13.6%, Tower Defense 8.2%
- #22 Unconventional Warfare
83% matchVery Positive87% of 70 reviews2022
Dev: Nightlife Strangers
Windows · Linux
In this top-down tactical shooter RPG, guide a band of cute soldiers through a warzone to safety. Rescue, train and manage your squad for the upcoming war of survival.
Why similar: Tactical RPG 21%, RTS 18%, Strategy RPG 17.4%, Strategy 12.2%, RPG 11.8%
- #23 Alien Shooter TD
82% matchVery Positive85% of 908 reviews2017
Dev: Sigma Team Inc.
Windows
Median: 3.8 hrsMean: 7.3 hrs≥1hr: 95%
Innovative Tower Defense inspired by legendary Alien Shooter series! The game was created in keeping with the best traditions of Sigma`s games, no concessions of any kind - everything is just like in real life!
Why similar: Tower Defense 39.8%, Tactical RPG 24.3%, Aliens 14.4%, Strategy 13%, Sci-fi 8.6%
- #24 Xenonauts 2
80% matchMostly Positive80% of 3,657 reviews2023
Dev: Goldhawk InteractivePub: Hooded Horse
Windows
Median: 5.7 hrsMean: 19.3 hrs≥1hr: 82%
Wage a global war of resistance against an alien invasion. Command turn-based tactical battles, build a network of covert bases, directly control your fighter wings, and achieve strategic victory in a simulation of asymmetric warfare against a technologically superior foe.
Why similar: Comic Book 24.6%, Roguelite 22.1%, RPG 14.1%, Strategy 13.7%, Cute 10%
- #25 8-Bit Invaders!
81% matchVery Positive83% of 444 reviews2016
Dev: Petroglyph
Windows
Median: 4.1 hrsMean: 6.1 hrs≥1hr: 78%
8-Bit Invaders! is a fast-paced, retro Real-Time Strategy game for the PC. Control the military might of the Galactic Marine Corps or Invade with the devastating power of the Cranioids! Mine, Build, and Fight your way to victory! Conquering the Multiverse was never so easy.
Why similar: RTS 45.3%, Strategy 20.5%, Simulation 14.6%, Aliens 13%, Sci-fi 6.6%
- #26 Warpips
79% matchVery Positive87% of 5,047 reviews2022
Dev: Skirmish Mode GamesPub: Daedalic Entertainment
Windows
Median: 2.1 hrsMean: 8.3 hrs≥1hr: 66%
Warpips is the ultimate quick to learn but amazingly deep tug-of-war strategy game. Deploy the right composition of soldiers, tanks, helicopters and planes in this tight, streamlined strategy-focused war game. Compose the best army, research the right tech; overwhelm your enemy!
Why similar: Auto Battler 26.3%, Tower Defense 21.9%, RTS 21.6%, Wargame 12%, 2.5D 10.6%
- #27 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 63.2%, Strategy 36.8%
- #28 Creeper World IXE
78% matchMostly Positive70% of 851 reviews2024
Dev: Knuckle Cracker
Windows
Median: 13.3 hrsMean: 13.8 hrs≥1hr: 84%
The unstoppable alien force known as The Creeper has returned, devouring thousands of worlds in its path, and yours is next. Battle against the Creeper fluid in a groundbreaking pixel-level simulation to prove that humanity will rule the galaxy forever!
Why similar: RTS 27.3%, Wargame 26.8%, Tower Defense 26.2%, Strategy 7.4%, Simulation 5.8%
- #29 Drill Core
76% matchVery Positive85% of 2,264 reviews2025
Dev: Hungry Couch GamesPub: tinyBuild
Windows
Median: 6.6 hrsMean: 14.6 hrs≥1hr: 89%
Corporate greed meets strategic planet-mining in Drill Core! Drill to the heart of planets while managing workers, researching cutting-edge tech, and fortifying against alien attacks. Will you prioritize efficiency and risk your workers' safety, or focus on defense for survival?
Why similar: Tower Defense 41.1%, Roguelite 23.6%, Strategy 15.9%, Aliens 8%, Sci-fi 6.3%
- #30 Deadstone
79% matchMostly Positive80% of 70 reviews2014
Dev: Timeslip Softworks
Windows · Mac · Linux
Median: 2.6 hrsMean: 4.0 hrs≥1hr: 79%
Based on the inhospitable frontier world of Mars, against the backdrop of a bacterial outbreak, Deadstone offers a compelling blend of frantic combat and tower defense, backed by a highly nuanced character development system and strategic elements of resource management.
Why similar: Split Screen 32.9% ★, RPG 28.2%, Strategy 25.2%, Sci-fi 13.8%
- #31 StarVaders
73% matchOverwhelmingly Positive97% of 3,970 reviews2025
Dev: PengonautsPub: Joystick Ventures
Windows · Mac
Median: 3.4 hrsMean: 9.4 hrs≥1hr: 73%
Pilot a powerful mech to fight off the alien invasion in this ULTIMATE fusion of deckbuilding and grid-based tactics. Discover game-breaking combos, rewind time to alter your fate, and protect the future of humanity in this endlessly replayable roguelike.
Why similar: Roguelite 37.7%, Strategy 20%, Anime 18.7%, Cute 14.8%, 2D 8.8%
- #32 Space Grunts
78% matchVery Positive81% of 78 reviews2016
Dev: Orangepixel
Windows · Mac · Linux
Median: 3.4 hrsMean: 4.2 hrs≥1hr: 94%
A turn-based game on a planet outpost - with no waiting between turns! Play it at the speed of an arcade game, or take your time and think about your next step.. no matter how fast you take your turn, it might be your last!
Why similar: Roguelite 31.1%, Aliens 22.3%, RPG 17.4%, Strategy 17.3%, Sci-fi 11.9%
- #33 Almost Alive
77% matchMostly Positive73% of 224 reviews2018
Dev: Emir CerimovicPub: Emir Games
Windows
Almost Alive is redefining the role playing tactical games with an awesome fast paced but complexe real time combat system in a mad hand drawn post apocalyptic world that features character mental sanity, destructible environment, a cover system, tons of loot, a none linear story, and a lot of humor.
Why similar: RPG 55.4%, Strategy 44.6%
- #34 Future War Tactics: SOF vs Alien Invasion – Turn-Based Strategy
75% matchMostly Positive70% of 136 reviews2025
Dev: QuadCom InteractivePub: Brightika, Inc.
Windows
Future War Tactics: SOF vs Alien Invasion - a turn-based strategy where you command SOF forces against an alien threat. Investigate disappearances, fight the invaders, and uncover the mystery. Every decision affects the fate of humanity.
Why similar: Strategy 48.7%, Aliens 39.9%, RPG 5.8%, Simulation 5.6%
- #35 Drone Swarm
77% matchMixed63% of 334 reviews2020
Dev: stillalive studiosPub: astragon Entertainment
Windows
Median: 3.0 hrsMean: 4.5 hrs≥1hr: 90%
Drone Swarm is a very unique take on tactical games. Control 32,000 drones in quick, fast-paced fights. Combine your swarm abilities and counter constantly evolving attacks of your opponents. Survive varying enemy waves, get upgrades to your swarm, and make it to the next system alive!
Why similar: RTS 52.5%, Sci-fi 29.2%, Strategy 18.2%
- #36 X-Morph: Defense
74% matchVery Positive92% of 4,073 reviews2017
Dev: EXOR Studios
Windows
Median: 3.0 hrsMean: 5.5 hrs≥1hr: 85%
Unique fusion of a top-down shooter and tower defense strategy. You are the invader! Use destructive weapons or lead your enemies into a maze of towers. Strategize in the build mode by carefully selecting various types of alien towers or throw yourself right into the heat of the battle.
Why similar: Tower Defense 57.6%, Aliens 17.3%, Strategy 15.9%, Sci-fi 9.3%
- #37 Planet TD
75% matchMixed62% of 274 reviews2023
Dev: MD GamesPub: Next in Game
Windows
Median: 1.1 hrsMean: 5.4 hrs≥1hr: 51%
6 different types of towers! 4 planets with different characteristics! 25 different enemies. Drones, Tanks, Biorobotic enemies and many different ground and air vehicles! Snowy and Glacial maps, Desert and Arid lands! Prepare to defend the solar system against invaders!
Why similar: Auto Battler 25.6%, Tower Defense 21.1%, RTS 15.8%, Wargame 15.5%, 2.5D 10.9%
- #38 Holo vs Robo
70% matchVery Positive97% of 473 reviews2026
Dev: Pompmaker1Pub: holo Indie
Windows
Median: 2.5 hrsMean: 4.7 hrs≥1hr: 80%
Build a strong defense of hololive dolls to defeat a robot army in this exciting hololive-themed tower defense game!!
Why similar: Tower Defense 46.1%, Strategy 24.8%, Anime 10.5%, Cute 7.6%, 2D 5.7%
- #39 Mars or Die!
76% matchMixed53% of 74 reviews2018
Dev: 34BigThings srl
Windows
Median: 12 minMean: 11.7 hrs≥1hr: 36%
Control two characters simultaneously! Survive, gather, collect upgrades, fight all sizes of one-eyed Martians, build defensible outposts and conquer Mars, in this glorious mix between roguelite and tower defense.
Why similar: Tower Defense 53.5%, Strategy 20.5%, Simulation 13.9%, Sci-fi 12.1%
- #40 Corrupted: Dawn of Havoc
72% matchMostly Positive75% of 108 reviews2024
Dev: 36Litters
Windows
A hardcore auto battle rogue-like deck-building (H.A.R.D) game, "Corrupted" has the strategy of an auto-battler and the challenging difficulty of a rogue-like. Build your own team and skill card deck, and retake the stolen planet through strategic placement and real-time card use!
Why similar: Auto Battler 30.8%, Tower Defense 18.6%, Roguelite 11.8%, 2.5D 11.5%, Strategy 7.9%
- #41 Black blood
74% matchMixed67% of 57 reviews2020
Dev: Arcane Games
Windows
Black blood is a mix of hardcore Tower Defense strategy and top-down shooter. Act as a defender against alien invaders, attack and destroy all their insidious plans...
Why similar: Tower Defense 55.4%, Aliens 26.2%, Strategy 18.4%
- #42 Control Craft 2
73% matchMostly Positive76% of 464 reviews2016
Dev: Cristian ManolachiPub: Conglomerate 5
Windows · Mac
Median: 3.9 hrsMean: 6.3 hrs≥1hr: 93%
Control Craft 2 is a real time strategy game where you will have to act quickly against attackers who want to invade our planet! Wave after wave, your soldiers will overthrow the enemy colonies and will occupy enemy bases one after another.
Why similar: Wargame 43.6%, RTS 39%, Strategy 12.1%, 2D 5.3%
- #43 WAR RATS: The Rat em Up
69% matchVery Positive96% of 339 reviews2025
Dev: wootusart Industries
Windows
The rats told me to make this game. Run and gun alongside your troops in the Great Rat War against the vile TechnoRat armies. Recruit units, build structures, collect gear and upgrade your weapons to turn the tide of battle in your favor. The TechnoRat is all consuming!
Why similar: Tower Defense 39.2%, Cartoon 23.8%, Roguelite 19.9%, Strategy 10.3%, 2D 6.8%
- #44 USC: Counterforce
71% matchMixed68% of 235 reviews2024
Dev: Angry Cat StudiosPub: Firesquid
Windows
Lead your Space Commandos in a revival of turn-based squad tactics inspired by UFO/XCOM and Aliens. Utilize in-depth skill & combat systems in multiple game modes, including a full campaign. Discover the truth behind the demise of colony MC83-A and join the USC in defending humanity!
Why similar: Strategy RPG 53.6%, RPG 17.1%, Strategy 16.7%, Sci-fi 12.5%
- #45 Xenopurge
68% matchVery Positive88% of 329 reviews2025
Dev: TrapticsPub: Firesquid
Windows
Xenopurge is a tactical auto-battler where you are a Commander tasked with purging the Xenos threat. Operate from a remote command center, issuing indirect orders via multi-screen interfaces. Plan routes, set priorities, and adapt as missions escalate and feel the true weight of being in command.
Why similar: Auto Battler 29.5%, RTS 25.1%, Roguelite 15.9%, Strategy 9.4%, Aliens 9.3%
- #46 Anomaly Collapse
69% matchVery Positive86% of 634 reviews2024
Dev: RocketPunch Games
Windows
Command a squad of adorably fierce warriors in Anomaly Collapse, a turn-based Roguelite strategy game that offers a fresh twist to an old formula! Face off against otherworldly beings and uncover the dark secrets of supernatural calamities. Immerse yourself in a story where every move counts!
Why similar: Roguelite 38.2%, Strategy 21.9%, Anime 11.8%, Sci-fi 11.5%, Cute 9.5%
- #47 Aegis of Earth: Protonovus Assault
73% matchMixed63% of 65 reviews2016
Dev: ACQUIRE Corp.Pub: Aksys Games
Windows
Aegis of Earth: Protonovus Assault is a frenetic and explosive new spin on action strategy gaming. Plan out and build up your defenses as hordes of hulking monstrosities bombard your heavily fortified city in an attempt to wipe you off the Earth for good!
Why similar: Tower Defense 51.3%, Strategy 34%, Anime 14.7%
- #48 Home Wars
70% matchMostly Positive79% of 1,158 reviews2017
Dev: Insane Dreamers
Windows
Median: 4.0 hrsMean: 9.1 hrs≥1hr: 77%
Do you hate bugs and arachnids? Seeing them creeps you out? Would you like them to disappear off the face of the Earth? GOOD! This is the right game for you! In HW you’ll play as a General of a toy soldiers army, with the sole purpose of saving the owner’s house from the invasion of those damn Bugs.
Why similar: RTS 36.2%, Wargame 35.9%, Tower Defense 16.6%, Strategy 11.3%
- #49 Space Crew: Legendary Edition
69% matchMostly Positive74% of 3,111 reviews2020
Dev: Runner DuckPub: Curve Games
Windows · Mac · Linux
Median: 2.7 hrsMean: 9.8 hrs≥1hr: 63%
Time for your toughest mission yet! Recruit and train your crew to tackle the growing threat from alien and android armies as you defend Earth to become a Galactic Legend in Space Crew: Legendary Edition. All new content free to existing owners of Space Crew!
Why similar: Wargame 43.4%, Roguelite 18%, Strategy 14.7%, Simulation 12.1%, Sci-fi 11.8%
- #50 HYPERNOVA: Escape from Hadea
71% matchVery Positive80% of 82 reviews2017
Dev: ActaLogic
Windows · Mac · Linux
A colorful but challenging blend of classic RTS and tower defense. Build, expand, research, and defend your alien colony as you race to construct a teleportation device and escape a dying star.
Why similar: Tower Defense 35.3%, RTS 32.8%, Strategy 10.9%, Cute 8%, Aliens 7.1%
- #51 Space Robinson: Hardcore Roguelike Action
71% matchMixed69% of 228 reviews2019
Dev: Luxorix GamesPub: Alawar
Windows · Mac · Linux
Median: 1.1 hrsMean: 5.4 hrs≥1hr: 51%
You think you are a die-hard? Here you will die quick! A proper hardcore RPG-action where you will die a million times across a myriad of procedurally-generated levels. Extremely difficult, but highly addictive Indie Gem in your Steam game collection!
Why similar: Sci-fi 57%, 2D 43%
- #52 Let Them Come
67% matchVery Positive84% of 1,353 reviews2017
Dev: Tuatara GamesPub: Versus Evil
Windows · Mac
Median: 2.8 hrsMean: 3.7 hrs≥1hr: 83%
Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.
Why similar: Tower Defense 52.6%, Aliens 21.8%, Strategy 10%, Sci-fi 7.8%, 2D 7.7%
- #53 Towerful Defense: A Rogue TD
66% matchMostly Positive73% of 227 reviews2024
Dev: Mini Fun Games
Windows · Mac · Linux
Median: 2.1 hrsMean: 4.2 hrs≥1hr: 67%
A roguelike tower defense 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 unique effect items to craft powerful builds that lead you to victory.
Why similar: Auto Battler 38.7%, Tower Defense 27.8%, Roguelite 14.9%, Strategy 8.2%, RPG 7.8%
- #54 Galaxy Defense War
64% matchVery Positive97% of 144 reviews2025
Dev: Zero Space
Windows
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and equipment to form a combat-ready team to resist alien invaders.
Why similar: Tower Defense 35.3%, Roguelite 22.4%, Strategy 16.4%, Cartoon 11.3%, Aliens 10.1%
- #55 Battle Grid
66% matchVery Positive83% of 226 reviews2023
Dev: Barking Dogs
Windows
Face relentless alien hordes, collect their resources and assemble an unstoppable squadron of mechs! In this Action Roguelite, discover game-breaking synergies, mix and match weapons and units, unlock upgrades, harvest and conquer alien planets.
Why similar: Auto Battler 38.2%, 2.5D 17.7%, Roguelite 16.6%, Aliens 14%, Strategy 8.3%
- #56 Molten Armor
70% 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 28.8%, RTS 27.3%, Wargame 24.6%, Strategy 10.4%, Sci-fi 5.9%
- #57 Templar Battleforce
67% matchVery Positive93% of 973 reviews2015
Dev: Trese Brothers
Windows · Mac · Linux
Median: 2.9 hrsMean: 10.4 hrs≥1hr: 72%
An addictive mix of strategic combat and army building, with the precision of an RPG. Design your squad members' exact build of equipment and talents to create unique fireteam combinations. Step into the pilot suit of a Leviathan mech, lead the Templar Knights in turn-based tactical warfare.
Why similar: Tactical RPG 31.8%, Strategy RPG 30%, Aliens 10.5%, RPG 8.9%, Strategy 8.7%
- #58 Age of Goblins
66% matchVery Positive88% of 67 reviews2024
Dev: Bruno Valla
Windows
AoG is a real-time strategy game (RTS) with simplified mechanics and cute visuals, but VERY challenging at times. Lead your goblin tribe into what they do best: expand, conquer, and exterminate each other. Any resemblance to humans is purely coincidental.
Why similar: RTS 48.2%, Tower Defense 33.4%, Strategy 15%, 2D 3.4%
- #59 Alien Marauder
68% 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 21.6%, Wargame 19.5%, Tower Defense 17.2%, 2.5D 13.2%, Roguelite 8.7%
- #60 Nuke Them All
66% matchVery Positive83% of 129 reviews2024
Dev: Indie PapaMikePub: GameEraStudios
Windows · Mac · Linux
An RTS classic reborn with a twist. Time is of the essence, Commander! Capture the flags, conquer the territories, and eliminate the enemy fort. And finally, nuke them all! This old-school sci-fi Indie real time strategy game, crafted by devoted team, revives the genre's enduring allure.
Why similar: RTS 29.1%, Wargame 27.4%, Tower Defense 23%, Strategy 8.8%, Aliens 7%