- #1 Anomaly 2
97% matchMostly Positive79% of 1,055 reviews2013
Dev: 11 bit studios
Windows · Mac · Linux
Median: 2.5 hrsMean: 4.7 hrs≥1hr: 77%
Anomaly 2 is a sequel to the critically acclaimed Anomaly Warzone Earth. Maintaining the core elements of the original, Anomaly 2 adds plenty of new features: unit morphing, over million tactical combinations, post-apo world and tower defense vs tower offense multiplayer mode.
Why similar: Strategy 37.3%, Tower Defense 37%, Sci-fi 7%, Action 6.8%, Indie 6.1%
Why You'll Like It: This direct sequel expands on the core mechanics with more complex squad management and unit transformations.
- #2 Anomaly Korea
96% matchMostly Positive78% of 792 reviews2013
Dev: 11 bit studios
Windows · Mac · Linux
Median: 2.8 hrsMean: 5.4 hrs≥1hr: 79%
Exclusively brought to Steam for PC, Mac and Linux in Anomaly Bundle, Anomaly Korea is an expansion campaign to Anomaly Warzone Earth. The alien robots are back and this time they’ve got Korea in their sights. It’s your job to lead a squad into fierce fire-fights and fend off the alien invasion.
Why similar: Strategy 46.2%, Tower Defense 31.4%, Action 9.6%, Sci-fi 8.2%, Indie 3%
Why You'll Like It: A standalone expansion that continues the tactical reverse tower defense gameplay with new units and challenging scenarios.
- #3 Anomaly Defenders
96% matchMostly Positive77% of 676 reviews2014
Dev: 11 bit studios
Windows · Mac · Linux
Median: 3.2 hrsMean: 5.7 hrs≥1hr: 89%
Anomaly Defenders is the closing installment of the Anomaly series. The original incarnation of the Tower Offense sub-genre had players controlling humans fighting alien invaders. Now, the tables have turned. The human counterattack is underway and the alien homeworld is under threat.
Why similar: Tower Defense 51.6%, Strategy 32.5%, Action 6.7%, Indie 5.5%, Sci-fi 3.6%
Why You'll Like It: This entry flips the script to traditional tower defense while maintaining the series' signature sci-fi aesthetic and fast-paced action.
- #4 Anomaly Warzone Earth Mobile Campaign
95% matchMostly Positive79% of 549 reviews2013
Dev: 11 bit studios
Windows · Mac · Linux
Median: 3.1 hrsMean: 6.6 hrs≥1hr: 91%
Anomaly Warzone Earth Mobile Campaign continues Steam's Anomaly Warzone Earth in an extra 15-level campaign. Originally released on mobile devices, the campaign is brought to Steam for PC, Mac and Linux exclusively in Anomaly Bundle. AWE Mobile Campaign turns tower defense on its head.
Why similar: Strategy 47.2%, Tower Defense 31%, Action 10.9%, Sci-fi 7.9%, Indie 2.2%
Why You'll Like It: A collection of additional missions that provide more of the classic reverse tower defense experience found in the original game.
- #5 X-Morph: Defense
94% 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 46.9%, Strategy 21.4%, Sci-fi 9.8%, Aliens 7.6%, Action 5%
Why You'll Like It: This game perfectly captures the reverse tower defense feel by combining top-down shooter action with strategic structure placement.
- #6 Defense Grid: The Awakening
94% 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 65.5%, Strategy 19.7%, Sci-fi 7.8%, Indie 2.9%, Aliens 2.7%
Why You'll Like It: A gold standard in the tower defense genre that offers deep strategic planning and a polished sci-fi presentation.
- #7 Infested Planet
93% 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 34%, Strategy 29.4%, RTS 10.9%, Sci-fi 7.3%, Action 4.9%
Why You'll Like It: A squad-based RTS that focuses on managing small groups of soldiers against overwhelming alien swarms, mirroring the squad-control feel of Anomaly.
- #8 Orcs Must Die! 2
92% matchVery Positive92% of 19,505 reviews2012
Dev: Robot Entertainment
Windows
Median: 5.5 hrsMean: 11.9 hrs≥1hr: 91%
You’ve tossed, burned and sliced them by the thousands – now orcs must die more than ever before! Grab a friend and slay orcs in untold numbers in this sequel to the 2011 AIAS Strategy Game of the Year from Robot Entertainment.
Why similar: Tower Defense 68.4%, Strategy 21%, Action 6.3%, Indie 3.1%, Singleplayer 1.2%
Why You'll Like It: It blends third-person action with tower defense mechanics, requiring you to actively participate in the defense of your base.
- #9 Revenge of the Titans
91% 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 54.1%, Strategy 22.7%, Sci-fi 7.3%, Indie 4.6%, Action 3.3%
Why You'll Like It: A sci-fi tower defense game that emphasizes resource management and tech-tree progression across a series of challenging levels.
- #10 Iron Brigade
91% 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 55.3%, Strategy 32.4%, Action 9.3%, Sci-fi 3%
Why You'll Like It: A unique hybrid of mech-based action and tower defense that emphasizes strategic positioning while you fight on the front lines.
- #11 Creeper World 3: Arc Eternal
90% matchOverwhelmingly Positive96% of 4,761 reviews2014
Dev: Knuckle Cracker
Windows · Mac · Linux
Median: 7.4 hrsMean: 77.0 hrs≥1hr: 78%
Creeper World 3 is what happens when cellular automata takes over a strategy simulation. Instead of discrete units that attack your base, a fluid-like substance spreads over the terraformable terrain. Your base, your weapons, your strategy... you must adapt them all.
Why similar: Tower Defense 61.4%, Strategy 21.2%, RTS 6.7%, Sci-fi 5.9%, Indie 2.7%
Why You'll Like It: A highly strategic RTS-tower defense hybrid where you must manage resources and build defenses against an encroaching fluid enemy.
- #12 Dungeon Defenders
89% matchVery Positive93% of 18,745 reviews2011
Dev: Chromatic Games
Windows
Median: 9.2 hrsMean: 42.0 hrs≥1hr: 89%
Create a hero from one of four classes to save Etheria in this 4-player coop Tower Defense Action-RPG. Includes Steam exclusive Portal gun & TF2 familiars!
Why similar: Tower Defense 68.7%, Strategy 27.4%, Singleplayer 3.8%
Why You'll Like It: This title combines action-RPG elements with tower defense, allowing you to actively defend your position alongside your automated turrets.
- #13 Sanctum 2
89% 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 64.1%, Strategy 18.5%, Sci-fi 7.3%, Action 4.2%, Indie 2.8%
Why You'll Like It: A first-person shooter that forces you to build complex mazes of towers to survive waves of alien invaders.
- #14 They Are Billions
87% matchVery Positive85% of 50,609 reviews2019
Dev: Numantian Games
Windows
Median: 14.1 hrsMean: 56.0 hrs≥1hr: 91%
They Are Billions is a Steampunk strategy game set on a post-apocalyptic planet. Build and defend colonies to survive against the billions of the infected that seek to annihilate the few remaining living humans. Can humanity survive after the zombie apocalypse?
Why similar: Tower Defense 44.8%, Strategy 33.9%, RTS 19.2%, Singleplayer 1.2%, Indie 0.8%
Why You'll Like It: This game blends real-time strategy with intense base defense, requiring careful planning to survive massive waves of enemies.
- #15 Kingdom Rush - Tower Defense
86% matchOverwhelmingly Positive97% of 16,302 reviews2014
Dev: Ironhide Game Studio
Windows · Mac · Linux
Median: 4.9 hrsMean: 16.3 hrs≥1hr: 86%
Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!Fight on forests, mountains and wastelands, customizing your defensive strategy with different tower upgrades and specializations!
Why similar: Tower Defense 67.2%, Strategy 24.1%, Action 3.9%, Indie 3.1%, Singleplayer 1.7%
Why You'll Like It: While more traditional, it offers the same level of strategic depth and satisfying progression that fans of the genre will appreciate.
- #16 Taur
86% 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 48.1%, Strategy 25.3%, Sci-fi 8.2%, RTS 7.3%, Action 4.5%
Why You'll Like It: A base-defense game where you control a powerful weapon system to fend off waves of enemies, focusing on high-action tactical combat.
- #17 GemCraft - Frostborn Wrath
84% matchVery Positive89% of 2,818 reviews2020
Dev: Game in a Bottle
Windows
Median: 3.9 hrsMean: 38.1 hrs≥1hr: 90%
The epic tower defense dark fantasy journey continues! Create powerful gems with various abilities and take on the battle against an endlessly flowing army of monsters, and face the growing darkness as you fight your way back towards the Spiritforge.
Why similar: Tower Defense 45.4%, Strategy 23.9%, RTS 15.4%, Action 5.9%, Top-Down 5.4%
Why You'll Like It: This game offers incredible strategic depth through its complex gem-combining system, perfect for players who enjoy optimizing their defenses.
- #18 Tower Wars
85% matchMostly Positive72% of 1,753 reviews2012
Dev: SuperVillain Studios
Windows · Mac
Median: 2.4 hrsMean: 6.8 hrs≥1hr: 88%
Tower Wars combines elements of tower defense, RTS, and all-out multi-player mayhem to bring you a completely unique experience, delivered with a fun and funny not-so-old world style!
Why similar: Tower Defense 69.7%, Strategy 24.2%, Indie 3.7%, Action 2%, Singleplayer 0.5%
Why You'll Like It: A competitive tower defense game that allows you to send units to attack your opponent, mirroring the offensive-defensive dynamic of Anomaly.
- #19 Artificial Defense
84% 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: Strategy 47.4%, Tower Defense 30%, Indie 11.3%, Action 11.3%
Why You'll Like It: A minimalist tower defense game that focuses on pure strategy and efficient structure placement to survive.
- #20 Ancient Planet Tower Defense
83% matchVery Positive82% of 1,186 reviews2015
Dev: Moonlight Mouse
Windows · Mac
Median: 3.3 hrsMean: 7.5 hrs≥1hr: 92%
Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders. Use powerful technologies of the Ancient and repel the attack of the enemy's armies!
Why similar: Tower Defense 71.2%, Strategy 24%, Indie 4.9%
Why You'll Like It: A classic-style tower defense game with a charming aesthetic and solid, challenging gameplay mechanics.
- #21 Mindustry
79% matchOverwhelmingly Positive96% of 25,660 reviews2019
Dev: AnukenDev
Windows · Mac · Linux
Median: 4.9 hrsMean: 26.9 hrs≥1hr: 76%
An open-ended factory management game with RTS and tower defense elements.
Why similar: Tower Defense 57.4%, Strategy 29.4%, RTS 8.4%, Indie 2.2%, Action 1.6%
Why You'll Like It: This game combines tower defense with resource automation, requiring you to build supply chains to keep your defenses running.
- #22 Sentinel 4: Dark Star
82% matchMostly Positive79% of 63 reviews2015
Dev: Origin8 Technologies Ltd
Windows
Median: 4.1 hrsMean: 4.6 hrs≥1hr: 96%
Want a tactical and strategic tower defense challenge that's packed with options and upgrades? Take command of the dropship Sentinel and do battle across a vibrant sci-fi world.
Why similar: Strategy 42%, Tower Defense 33.4%, Sci-fi 14.8%, Indie 9.7%
Why You'll Like It: A sci-fi tower defense game that features a variety of units and upgrades, providing a classic experience for fans of the genre.
- #23 Fieldrunners 2
82% matchVery Positive86% of 524 reviews2013
Dev: Subatomic Studios LLC
Windows
Median: 3.0 hrsMean: 16.5 hrs≥1hr: 70%
Get ready to DEFEND THE WORLD! The biggest sequel in tower defense history is finally here: Fieldrunners 2 has arrived! From Subatomic Studios, creators of the award winning classic strategy game comes an all new adventure that was years in the making.
Why similar: Tower Defense 71.3%, Strategy 23.8%, Action 4.9%
Why You'll Like It: A classic tower defense experience that emphasizes precise placement and strategic pathing to overcome increasingly difficult waves.
- #24 Bloons TD 6
78% matchOverwhelmingly Positive97% of 382,546 reviews2018
Dev: Ninja Kiwi
Windows · Mac
Median: 19.4 hrsMean: 75.6 hrs≥1hr: 92%
The Bloons are back and better than ever! Get ready for a massive 3D tower defense game designed to give you hours and hours of the best strategy gaming available.
Why similar: Tower Defense 65.2%, Strategy 30.7%, Singleplayer 2.3%, Action 1.9%
Why You'll Like It: Despite its colorful aesthetic, it provides deep strategic gameplay and complex upgrade paths that challenge any tower defense fan.
- #25 Element TD 2 - Tower Defense
79% matchVery Positive90% of 3,152 reviews2021
Dev: Element Studios
Windows
Median: 3.3 hrsMean: 13.2 hrs≥1hr: 76%
Element TD 2 sees you combine powerful elements to create unique towers. Prove your defenses against challenging foes, and compete or cooperate with others to determine who has mastered the elements.
Why similar: Tower Defense 55.2%, Strategy 26.7%, RTS 13.7%, Indie 2.9%, Singleplayer 1.5%
Why You'll Like It: A highly strategic tower defense game that focuses on elemental combinations and maze building to defeat diverse enemy types.
- #26 Defense Zone 3 Ultra HD
81% matchMostly Positive80% of 504 reviews2016
Dev: Artem Kotov
Windows · Mac · Linux
Median: 7.1 hrsMean: 32.1 hrs≥1hr: 71%
The sequel to the hit strategy game, with new weapons, landscapes, and options.
Why similar: Strategy 42.7%, Tower Defense 38.5%, Action 10.2%, Indie 8.6%
Why You'll Like It: A visually impressive tower defense game that focuses on tactical placement and managing limited resources effectively.
- #27 Radiant Defense
80% 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 48.7%, Strategy 29.2%, Indie 6.3%, Sci-fi 5.9%, Action 5.4%
Why You'll Like It: A vibrant, sci-fi themed tower defense game that focuses on building mazes and utilizing unique weapon types.
- #28 Protolife
78% matchVery Positive86% of 465 reviews2018
Dev: Volcanic Giraffe
Windows · Mac
Median: 3.2 hrsMean: 7.7 hrs≥1hr: 74%
Protolife is an unique tower-based strategy game which gives you a direct control over the builder robot in a struggle against the hungry proto-life organism.
Why similar: Tower Defense 39.7%, Strategy 21%, RTS 13.6%, Sci-fi 10.9%, Aliens 6.1%
Why You'll Like It: A unique RTS-tower defense hybrid where you must terraform the environment while defending against a spreading alien infection.
- #29 Super Sanctum TD
77% matchVery Positive87% of 1,575 reviews2013
Dev: Coffee Stain StudiosPub: Coffee Stain Publishing
Windows · Mac
Median: 1.9 hrsMean: 33.2 hrs≥1hr: 75%
Super Sanctum TD is a retro-styled Tower Defense game that focuses on strategy, customization and replayability. Build advanced mazes and construct powerful towers to prevent alien hordes from reaching the Core!
Why similar: Tower Defense 52.5%, Strategy 19.2%, Sci-fi 9.6%, Aliens 7.8%, Action 4%
- #30 Unstoppable Gorg
76% 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 61%, Strategy 21.8%, Sci-fi 6.7%, Action 3.6%, Indie 3.6%
- #31 Spoids
76% matchMostly Positive72% of 115 reviews2017
Dev: AirWave GamesPub: BindleBot
Windows
Median: 3.2 hrsMean: 3.6 hrs≥1hr: 77%
Spoids is a challenging throwback to the original brand of tower defense games. Command the Remote Defense Space Station and respond to distress calls of those who are being attacked by the invaders. Travel from planet to planet using your powerful arsenal to hold back the Spoids.
Why similar: Tower Defense 38.5%, Strategy 38.4%, Indie 8.9%, Action 7.6%, Sci-fi 6.6%
- #32 Alien Robot Monsters
75% 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 41.1%, Strategy 39.7%, Action 10.3%, Indie 8.8%
- #33 Commando Jack
77% matchMixed50% of 557 reviews2014
Dev: Colossal GamesPub: KISS ltd
Windows · Mac
Median: 3.5 hrsMean: 4.1 hrs≥1hr: 94%
A Tower Defence game, that actually allows you to sit inside the turret and come face-to-face with the enemies! Addictive strategy - action game, with loads of shooting and explosions! Nearing 2 MILLION DOWNLOADS!
Why similar: Strategy 44.4%, Tower Defense 38.9%, Action 9.1%, Indie 7.6%
- #34 Sanctum
73% 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 64.3%, Strategy 20.5%, Sci-fi 6.6%, Action 4.5%, Indie 3.4%
- #35 Harvest: Massive Encounter
75% matchMostly Positive79% of 159 reviews2009
Dev: Oxeye Game Studio
Windows · Mac · Linux
Median: 1.2 hrsMean: 3.9 hrs≥1hr: 54%
Harvest: Massive Encounter is an award-winning real-time strategy game with battles of epic proportions and a unique style of resource management and exploration. Build power plants, mineral harvesters and defense towers and make sure they have sufficient energy to fend off endless hordes of evil aliens.
Why similar: Tower Defense 51.2%, Strategy 33.6%, Indie 7.2%, Sci-fi 6.9%, Singleplayer 1.1%
- #36 M.A.C.E. Tower Defense
74% matchMostly Positive70% of 61 reviews2017
Dev: EntwicklerX
Windows
M.A.C.E. Tower Defense is a classic tower defense game with unique towers and enemies and an ingame shop system for getting better towers, upgrade existing towers and buy special items.
Why similar: Tower Defense 37.7%, Strategy 37.3%, Action 9.4%, Indie 8.1%, Sci-fi 7.4%
- #37 Defense Zone
74% matchVery Positive83% of 83 reviews2014
Dev: Artem Kotov
Windows · Mac · Linux
Stunning detail of levels, in-depth gameplay, finely tuned balance of all levels and turrets. During the game you will hold your defense with your turrets against the massive hordes of enemies.
Why similar: Tower Defense 57.3%, Strategy 35.4%, Indie 7.3%
- #38 GemCraft - Chasing Shadows
71% matchVery Positive95% of 4,334 reviews2015
Dev: Game in a BottlePub: Armor Games Studios
Windows
Median: 4.6 hrsMean: 19.2 hrs≥1hr: 91%
An epic, challenging tower defense game with an emphasis on strategy and replayability. Summon gems of immense magical potency and harness their unique abilities against a seemingly endless horde of monsters. The archdemon seeks to swallow the world, and you must journey to stand against her.
Why similar: Tower Defense 66.7%, Strategy 24.2%, Indie 3.6%, Action 2.4%, Top-Down 1.8%
- #39 Age of Steel: Recharge
73% matchMixed76% of 334 reviews2016
Dev: Quaint Emerald
Windows · Mac
Median: 4.0 hrsMean: 4.4 hrs≥1hr: 96%
"Age of Steel: Recharge" is a 2D strategy with a view from the side. You're taking the role of commander, who was entrusted the management of the military base. Your mission is to defend a base from the waves of enemies at any price.
Why similar: Strategy 52.4%, Tower Defense 28.7%, Action 10.2%, Indie 8.7%
- #40 Rush for Glory
73% matchMixed61% of 148 reviews2014
Dev: Parseh Game StudioPub: KATNAPPE SP. Z O. O.
Windows
Median: 24 minMean: 29.8 hrs≥1hr: 34%
Rush for Glory is featuring challenging and rewarding Tower Defense battles, in which players are defending their base against an alien invasion. By strategically building towers and upgrading them, the player can keep his base safely and further progress through the extensive singleplayer campaign.
Why similar: Tower Defense 57.7%, Strategy 35.1%, Action 7.2%
- #41 ZeroZone2020
71% 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 58.2%, Strategy 33.2%, Action 8.6%
- #42 No Creeps Were Harmed TD
67% 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 47.9%, Strategy 24%, Sci-fi 13.4%, Aliens 8%, Action 4.2%
- #43 Aegis of Earth: Protonovus Assault
72% 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: Strategy 52.3%, Tower Defense 47.7%
- #44 Space Run
70% 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 59.9%, Strategy 26.3%, Sci-fi 8%, Indie 3.9%, Action 1.3%
- #45 2112TD: Tower Defense Survival
67% 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 42.6%, Strategy 23.3%, Sci-fi 13.4%, Aliens 8.3%, Action 5.5%
- #46 Sentinel 3: Homeworld
70% matchMostly Positive80% of 148 reviews2014
Dev: Origin8Pub: Strategy First
Windows
Median: 3.9 hrsMean: 16.9 hrs≥1hr: 73%
The biggest installment of the award winning Sentinel sci-fi tower defense series now on PC!Take the fight to the alien homeworld and unleash a massive arsenal of weaponry. Get up close and personal on the battlefield in your power armor to execute devastating attacks and support your defenses! * An epic campaign across 20 levels.
Why similar: Tower Defense 67%, Strategy 24.1%, Sci-fi 4.7%, Indie 4.3%
- #47 Mushroom Wars 2
70% matchMixed62% of 975 reviews2017
Dev: Zillion WhalesPub: Azur Games
Windows · Mac · Linux
Median: 5.6 hrsMean: 8.4 hrs≥1hr: 91%
In Mushroom Wars 2, enemy tribes of feisty mushroom creatures face off in short but fierce RTS battles. Step into the shoes of a fearless Mushroom Commander, choose a hero to lead your army, and take control of the battlefield in a variety of multiplayer modes or challenging story campaign.
Why similar: Strategy 39%, Tower Defense 34.2%, RTS 16.1%, Action 5.9%, Indie 4.8%
- #48 Defense Technica
72% matchMostly Negative40% of 188 reviews2013
Dev: Kuno Interactive
Windows · Mac
Median: 3.4 hrsMean: 4.6 hrs≥1hr: 95%
Defense Technica is the next evolution in hardcore tower defense strategy games. Protect the core from an onslaught of unrelenting biomechanical terrors with a powerful range of tower defense units – each with their own upgradable features and methods of attacks.
Why similar: Tower Defense 71.4%, Strategy 24%, Indie 4.6%
- #49 XENOBREAKERS: Classic Tower Defense
64% 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: Strategy 47.6%, Sci-fi 20.1%, Indie 10.5%, Tower Defense 9.3%, Aliens 8.6%
- #50 Mechs V Kaijus - Tower Defense
66% 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 72.9%, Strategy 18.2%, Indie 4.6%, Action 3.5%, Singleplayer 0.8%
- #51 Artificial Extinction
68% 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 45.9%, Strategy 28.7%, Sci-fi 9.6%, Action 7.9%, Indie 6.7%
- #52 Beware Planet Earth
69% 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 56.5%, Strategy 22.7%, Aliens 8%, Sci-fi 7.6%, Indie 2%
- #53 Defense Task Force - Sci Fi Tower Defense
69% 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 50.4%, Strategy 31.7%, Sci-fi 10.9%, Indie 7%
- #54 Towerful Defense: Prologue
65% 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 43.4%, Strategy 24.6%, RTS 12.4%, Aliens 7.8%, Action 6%
- #55 Abyss Raiders: Uncharted
71% matchMixed42% of 175 reviews2015
Dev: DarkStar GamesPub: Conglomerate 5
Windows
Median: 3.4 hrsMean: 5.2 hrs≥1hr: 96%
Abyss Raiders: Uncharted is an action tower defence game, set in a future where robots are the dominant species in the universe. You will need to survive waves of fierce enemies whilst searching for the ancient ruins that have the power to prevent the second apocalypse.
Why similar: Strategy 47.3%, Tower Defense 38.1%, Action 8%, Indie 6.5%
- #56 Space Cycle
63% 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 50.5%, Strategy 27.5%, Sci-fi 14.9%, Indie 4.8%, Singleplayer 2.3%
- #57 Repel The Rifts
62% 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 57.2%, Strategy 21.9%, Sci-fi 16.9%, Indie 2.7%, Singleplayer 1.3%
- #58 iBomber Defense
69% matchMostly Positive74% of 244 reviews2011
Dev: Cobra Mobile
Windows · Mac
Median: 1.3 hrsMean: 7.0 hrs≥1hr: 54%
iBomber Defense combines classic tower defense gameplay with intense action and strategy. Keep enemies at bay all over the world using a variety of weapons and tactics, from rattling Machine guns, explosive cannons and awesome anti-aircraft artillery!
Why similar: Tower Defense 59.5%, Strategy 33.9%, Indie 6.6%