
Defend your tower for as long as you can from the aliens invading your space! Level up, earn money and new units, and strategically place them in the grid!
60+ similar titles based on shared tags and player behavior. Themes include Strategy, Action RTS, Tower Defense, RTS.

Defend your tower for as long as you can from the aliens invading your space! Level up, earn money and new units, and strategically place them in the grid!

Cosmic Robots
Defend your planet from waves of robot invaders! Build powerful turrets, upgrade your defenses, and command robot units to fight drones, tanks, and massive bosses. Then send your own forces to attack the enemy planet in this action-packed sci-fi tower defense game.

Tower Defense Ultimate: Crashfall Protocol
Defend your base against relentless alien waves in a sci-fi tower defense strategy game. Build deadly kill zones, unlock new towers and special abilities, and adapt your loadout to survive escalating assaults across a hostile campaign.
Defend your planet from waves of robot invaders! Build powerful turrets, upgrade your defenses, and command robot units to fight drones, tanks, and massive bosses. Then send your own forces to attack the enemy planet in this action-packed sci-fi tower defense game.
Why similar: Tower Defense 21.9%, Action RTS 17% ★, RTS 13.9%, Robots 10.2%, Aliens 7.8%
Defend your base against relentless alien waves in a sci-fi tower defense strategy game. Build deadly kill zones, unlock new towers and special abilities, and adapt your loadout to survive escalating assaults across a hostile campaign.
Why similar: Action RTS 29% ★, Tower Defense 22.2%, RTS 12.9%, PvE 8.3%, Aliens 7%
Sci-fi tower defense meets ARPG-like hero combat. Build towers then fight alongside them with your hero as you battle through a campaign to uncover the fate of a colonization effort on a distant planet.
Why similar: Tower Defense 26.9%, Action RTS 23.7% ★, RTS 11.6%, Robots 7.9%, Sci-fi 7.8%
Master strategic gameplay as you build, train, and upgrade units to protect your base. With an immersive storyline, stunning visuals, and easy controls, it's an epic battle for survival!
Why similar: Action RTS 35% ★, Tower Defense 23.5%, RTS 17.1%, Linear 6.6%, Strategy 6.5%
A survival RTS game where you defend your village against relentless waves of Norse mythological creatures. Build defenses, train warriors, and gather resources to survive as long as possible. If your Town Hall falls, it's game over. How long will you last?
Why similar: Action RTS 34.6% ★, Tower Defense 23%, RTS 16.4%, PvE 10.5%, Strategy 6.2%
Lose yourself in an indie solo-dev. treasure that harkens back to arcade classics! All while thumping along to killer retro-inspired beats by Ovani sound. Embark on an epic tower defense adventure against awe-inspiring machine monstrosities, made by a devoted gamer for devoted gamers.
Why similar: Action RTS 35.1% ★, Tower Defense 23.5%, RTS 17%, Futuristic 6.7%, Strategy 6.6%
Starfall Defenders is a classic tower defense game that features unique towers and enemies. It also has an in-game shop system that allows players to purchase better towers, upgrade existing ones, and buy special items like the Atom Bomb, Splash Bomb, and Air Supply.
Why similar: Action RTS 37.7% ★, Tower Defense 27.1%, Strategy 10.3%, Futuristic 6.8%, Aliens 6.8%
Defence of Nythrial is a 2D, Top down, Tower Defence / Real Time Strategy Game.
Why similar: Action RTS 33.7% ★, Tower Defense 25.1%, RTS 20.3%, Strategy 11.4%, Magic 5.8%
Command Captain Hope's ship in this strategic 2D space game. Build structures, deploy fleets, and manage resources to defend the Citadel against waves of enemies. Combine direct ship combat, tower defense, and base building as you face epic boss battles.
Why similar: Action RTS 29.5% ★, Tower Defense 21.6%, RTS 17.3%, Strategy 8.8%, Aliens 7.3%
Atom Assault throws you into a chaotic Red vs Blue war where everything explodes, infantry fish for money, and you can even pilot nukes in first person. Full 3D, fully destructible world, fast, funny, proudly indie. If you miss old school RTS mayhem, this one hits hard.
Why similar: Action RTS 28.2% ★, Tower Defense 20%, RTS 15.7%, Aliens 9.9%, Robots 9.3%
It’s a defense game where you create your own strategy, grow your units, and defend against enemies.
Why similar: Action RTS 32.2% ★, Tower Defense 23.8%, RTS 17.5%, Strategy 6.5%, Aliens 4.7%
Join in on the next gold rush and become a prospector in space. In this unique tower defense you can set up and reposition towers for maximum efficiency and adapt to the environment.
Why similar: Action RTS 27.8% ★, Tower Defense 22%, RTS 15.9%, Futuristic 8.2%, Sci-fi 6.1%
Master legendary heroes in intense top-down combat while commanding strategic tower defenses. Control your champion directly, build and upgrade persistent towers that provide covering fire, then face powerful bosses and massive hordes. Use magic to empower your strategy and turn the tide of battle.
Why similar: Action RTS 28.3% ★, Tower Defense 21.6%, RTS 13.7%, PvE 8.9%, Action Roguelike 7.3%
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.
Why similar: Action RTS 24.5% ★, Tower Defense 20.5%, RTS 14.9%, Robots 10.6%, Futuristic 8.8%
Frontier Control: Invasion is a Real-Time Strategy survival game in which you play the commander of a human space colony under the attack of outer space robots. Build your base, train your colony, and fight herds of enemies and bosses.
Why similar: Action RTS 22.7% ★, Tower Defense 18.7%, RTS 16%, PvE 7.7%, Futuristic 7.5%
Battle For Cosmos is a fast-paced, action-packed RTS set in space. With a focus on the battle it is perfect for those who want a thrilling and engaging strategy game without the unnecessary filler. Take control of your empire, build your defenses, and conquer the cosmos!
Why similar: Action RTS 45.8% ★, RTS 20.8%, Strategy 8.1%, PvE 7.2%, Futuristic 6.2%
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 23.5%, Action RTS 20.3% ★, Futuristic 12.8%, Aliens 11.1%, Robots 9.6%
A lighthearted tower defense game where everyday people fight back against hustle culture. Place and upgrade offbeat heroes like pillow-throwing grannies and wheelchair slingshot kids to stop workers zombified by an energy drink corp. Use philosophy and paint to remind humanity how to enjoy life.
Why similar: Action RTS 42% ★, Tower Defense 36.7%, Strategy 12.9%, Stylized 6.5%, Indie 1%
Song of the Chalice is a simple 3D realtime strategy for a single player with tower defense mechanics, inspired by the events of the Hussite era (1419-1420).
Why similar: Action RTS 37.1% ★, RTS 21.1%, Tower Defense 13.4%, Strategy 11.4%, Stylized 6.3%
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 27.6% ★, Tower Defense 18.6%, RTS 13.1%, Action Roguelike 10.4%, PvE 8.5%
Raise your favorite characters and have them ready to fight in the next run! Command beautiful girls to defend the castle and princess A non-reset roguelite × tower defense
Why similar: Action RTS 35.6% ★, Tower Defense 30%, Action Roguelike 13.5%, RTS 8.6%, Strategy 6.8%
Take on the role of commander and protect Earth from the relentless Drone invasion in this exciting tower defense game. Strategize and strengthen your defenses by utilizing a variety of towers, abilities, and elemental upgrades. It's up to you to lead the charge and save humanity from destruction.
Why similar: Action RTS 36% ★, Tower Defense 23.7%, PvE 10.8%, Robots 7.6%, Linear 6.3%
Protect the base from an alien invasion. Place cannons and destroy the invaders. Upgrade cannons to resist the enemies.
Why similar: Action RTS 28.1% ★, Tower Defense 22.9%, RTS 16.7%, Futuristic 9.7%, Aliens 7.3%
Conjure towers and cast spells to slay hordes of enemies attempting to destroy your lone bastion
Why similar: Tower Defense 34.4%, Action RTS 25.9% ★, Strategy 11.3%, PvE 8.9%, RTS 7.9%
On planets occupied by robots, mine resources and escape while fending off their attacks! The Ark's survival is entirely in your hands. Many elite crews with abilities will assist you in your mission. The various turret modules are always doing their best to defend your base without your attention.
Why similar: Action RTS 27.8% ★, Tower Defense 20.3%, RTS 15.5%, Robots 10.6%, PvE 7.9%
You play in a SciFi environment with LowPoly graphics, engaging in Tower Defense. Manage resources! Each round introduces more enemies that you must defeat. Build resource ships in the factory and simultaneously construct towers on the platforms to fend off the adversaries.
Why similar: Action RTS 42.3% ★, Tower Defense 31.6%, Strategy 14%, Stylized 6.6%, 3D 4.7%
Prevent the invasion of the minions that stimulate the desire for challenge and prove that you are a slayer physically and mentally.
Why similar: Action RTS 37% ★, Tower Defense 31.7%, RTS 20.6%, Strategy 9.5%, Indie 0.8%
A 3D FPS/TPS Tower Defence game in a sci-fi world, defend your base from corrupted robots and unlock better turrets
Why similar: Action RTS 26.1% ★, Tower Defense 19.4%, RTS 14.1%, PvE 10.1%, Futuristic 7.9%
A finger-blisteringly action-packed Tower Defence advanture!
Why similar: Action RTS 40.9% ★, Tower Defense 30.2%, Futuristic 15.6%, 3D 4.8%, Strategy 4.5%
Cozy tower defense meets stylistic futuristic steampunk. Manage resources, buildings & towers. Unlock perks to further specialize yourself. Plan your defense & survive all enemy waves.
Why similar: Action RTS 41% ★, Tower Defense 25.6%, Strategy 8.3%, PvE 6.5%, Futuristic 5.7%
Negative Energy is a tower defense game with basic RTS mechanics, where your goal is to defend the construction of a Dyson sphere, while fighting against waves of hundreds of enemies ships.
Why similar: Tower Defense 27.7%, Action RTS 27.1% ★, RTS 19.5%, Strategy 11.4%, Futuristic 6.9%
Use your towers to build a maze to kite the enemies to make more damage. But don’t block their way or they will go aggro on you! Use the checkpoints to have the enemies walk longer routes through your maze. Build your own maps in the map editor.
Why similar: Action RTS 38.6% ★, Tower Defense 28.4%, Strategy 11.7%, Magic 6.9%, PvE 4.9%
"SYNCHRONIZERS: UNDEAD MARINES" blends high-quality Three-Lane Tower Defense with Reverse Tower Defense gameplay. Command your units in a thrilling narrative reminiscent of a StarCraft and Plants Vs. Zombies fusion! Your choices will forge the path to victory—or defeat.
Why similar: Action RTS 31.2% ★, Tower Defense 19%, RTS 13.5%, Futuristic 9.9%, Aliens 9.3%
BioFusion is a VR co-op multiplayer, PvE, first-person-shooter, tower defense game. Swing on a grappling hook, ride a hovercraft, throw grenades, collect buffs, build towers and traps. Do what you must to keep the mutants from the Spores of Evolution.
Why similar: Action RTS 35.8% ★, Tower Defense 23.5%, RTS 16.9%, PvE 10.7%, Strategy 6%
Faith & Shield: 4044 Tower Defense game, where you protect the human settlement from the incoming invaders, robots and other creatures, never seen before on our planet.
Why similar: Tower Defense 33.1%, Futuristic 14.7%, Aliens 14.5%, Robots 14.1%, Sci-fi 10.1%
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 36.3%, PvE 14.9%, Strategy 11.7%, Magic 9.8%, Futuristic 9.1%
Fight against huge hordes of geometric amalgamations with BOTH towers and allied defenders to stop them from breaking your CORE! Travel to barren deserts, hostile wastelands in this fast-paced tower-defence game.
Why similar: Action RTS 39.7% ★, Tower Defense 28.3%, PvE 9.2%, Strategy 8%, Retro 5.5%
TAVU is a PvE RTS game with a tactical combat system. Build your bases and defend them against waves of enemy attacks. Upgrade your units and destroy enemy bases to gain new territories and resources.
Why similar: Action RTS 26.3% ★, RTS 17.4%, Tower Defense 14.3%, PvE 10.9%, Sci-fi 7.1%
Critter Chaos TD is a fast, frantic and chaotic Tower Defence game in which you must rid the world of the evil Critters. Build stations and guns to fortify your defences and prevent the various types of Critters from reaching your base.
Why similar: Action RTS 43.1% ★, Tower Defense 24.4%, RTS 17.1%, Strategy 8.6%, Retro 3.3%
Build your defense base to repel alien invaders. Atahion is a strategy and tactical defense game in which you have to extract resources, build defense towers and use bonuses to complete the mission.
Why similar: Tower Defense 34.2%, RTS 22.7%, Action RTS 15.5% ★, Strategy 8.3%, Sci-fi 8.2%
Join our machine legion to conquer the world.
Why similar: Tower Defense 23.9%, RTS 16.1%, Robots 13.4%, Futuristic 13.2%, Aliens 11%
It’s a defense game where you create your own strategy, grow your units, and defend against enemies.
Why similar: Action RTS 32.3% ★, Tower Defense 25.6%, RTS 18.1%, Aliens 8%, Strategy 6.2%
A tower defense game where you must defend your home planet from endless waves of Gribblins!
Why similar: Action RTS 36% ★, Tower Defense 25.7%, RTS 18.9%, Strategy 6.9%, Stylized 6.5%
AT THE LIMITS OF EARTH, AT THE EXTREMITY OF HEAVEN. A REAL-TIME STRATEGY NIGHTMARE.
Why similar: Action RTS 29.3% ★, Tower Defense 19.3%, RTS 15.7%, Aliens 10.3%, Sci-fi 5.7%
Stickman World Battle - new exciting and thrilling real-time strategy with famous stickman heroes!
Why similar: Action RTS 29.7% ★, Tower Defense 28.3%, RTS 19.8%, Strategy 12.5%, Action 4.6%
INTERGALACTICORP. is a sci-fi rogue-lite tower defense game where you take on the role of an operator-bot, charged with conducting an intergalactic mining operation. Will you thrive as an efficient miner in this alien environment, or succumb to the dangers that lurk in the depths of space?
Why similar: Tower Defense 27.9%, Robots 13.8%, Futuristic 12.7%, Sci-fi 8.8%, Action Roguelike 8.6%
Defend the Dead is a 3D action tower defense game where pesky humans try to destroy your chaos crystal Set traps, cast spells, and rise into battle, upgrading your skills to fend off endless waves.
Why similar: Action RTS 32.7% ★, Tower Defense 24.4%, RTS 17.6%, Strategy 7.2%, Magic 6.2%
The roads are under siege. Command a knight, wizard, and druid to stop waves of monsters in this fantasy strategy defense game. Save gold between missions, plan your defenses carefully, and survive 8 escalating levels where enemies grow stronger and attack from multiple paths.
Why similar: Action RTS 51% ★, Tower Defense 30.5%, Strategy 11.5%, Stylized 3.6%, 3D 2.6%
Cosmic Stronghold is a mix of the genres RTS and Tower Defense. Your primary goal is to keep your space station alive for as long as possible, so that it can harvest the nearby mines for precious mineral ores. You will be faced with waves of enemies, getting stronger and stronger for each wave.
Why similar: Action RTS 33.7% ★, Tower Defense 23.9%, RTS 18.4%, Aliens 10.1%, Strategy 7.3%
Customize your Ships, Upgrade your fleet, and Command your way to victory in this ruthless rogue-lite tower defense/real time strategy hybrid. Take on an enemy that learns from your moves and adjusts its own path. Do you have what it takes to persevere?
Why similar: Action RTS 26.3% ★, Tower Defense 21.9%, RTS 17.2%, Futuristic 8.7%, PvE 7.7%
Random Realms Hero Under Siege is a fast-paced single player tower defense RTS where every match is a fresh roll of the dice. Build bases from randomized building options, lead a leveling hero and their army, and hold the line against escalating enemy waves.
Why similar: Tower Defense 29.6%, Action RTS 28% ★, RTS 15.9%, PvE 12.5%, Strategy 8.4%
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 34.3% ★, RTS 18.2%, Futuristic 12.2%, Robots 9.2%, Strategy 7%
Play as a healer, ensure the survival of your warriors through spells and enhancements fighting against hordes of green skins.
Why similar: Action RTS 51.1% ★, PvE 11.1%, Magic 10.9%, Strategy 10%, Stylized 8.9%
Fable Forts! TD: defend your fairy kingdom from stupid human invaders!
Why similar: Action RTS 31.2% ★, Tower Defense 31.2%, RTS 21.1%, Strategy 9.6%, Stylized 3.1%
Celestial Defense is a sci-fi space tower defense strategy game where tactical base building and resource management determine your survival. Build asteroid belts, evolve planets, and withstand relentless wave survival combat against the Void.
Why similar: Action RTS 42.3% ★, Tower Defense 31.2%, Strategy 12.9%, Sci-fi 7%, Space 4%
Space Raiders in Space is a wave defense roguelike mixing squad management and tower defence mechanics. Command your almost competent crew to loot weapons and supplies, build defenses, and fight their way through the Bugpocalypse.
Why similar: Action RTS 27.4% ★, Tower Defense 23.4%, RTS 14.6%, Action Roguelike 10.2%, Sci-fi 7.1%
A competitive multiplayer strategy game blending lane combat and dynamic upgrades. Spawn units, unlock spells, and create insane build synergies to destroy the enemy castle.
Why similar: Action RTS 30.5% ★, Tower Defense 24.8%, RTS 20.1%, Strategy 8.1%, Stylized 4.7%
A retrowave tower defense game where the player must manage their arsenal of sentries to fight off waves of synths, stop their invasion, and take the fight to their home.
Why similar: Tower Defense 39.5%, Futuristic 17.5%, Strategy 12.9%, PvE 9.2%, Retro 8.9%
Assemble your army, build your village, manage your villagers, and survive the night's monster attacks until dawn.
Why similar: Action RTS 47.6% ★, Tower Defense 31.1%, Strategy 7.9%, Stylized 5.5%, 3D 4.2%