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

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.

Harvest: Massive Encounter
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.

Sentinel 4: Dark Star
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.
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 59.9%, Strategy 22.1%, Sci-fi 10.5%, Indie 5.8%, Singleplayer 1.8%
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: Tower Defense 40.2%, Strategy 28.4%, Sci-fi 23.3%, Indie 8.1%
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
Why similar: Tower Defense 72.3%, Strategy 12.2%, Sci-fi 11.3%, Indie 2.2%, Singleplayer 2%
An AI menace is headed to your motherboard! CAN YOU SURVIVE?! A short tower defense game, where you strategically place unique towers on a grid to stop relentless waves of enemies. Survive as long as possible, & climb leaderboards.
Why similar: Tower Defense 71%, Sci-fi 22.1%, Strategy 5%, Indie 1.3%, Singleplayer 0.6%
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 74.8%, Strategy 15.1%, Sci-fi 6.8%, Indie 3.3%
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 57.7%, Strategy 20.5%, Sci-fi 16.3%, Indie 5.5%
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Why similar: Tower Defense 47.6%, Strategy 29.7%, Sci-fi 15.5%, Indie 4.8%, Singleplayer 2.3%
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Why similar: Tower Defense 72.3%, Strategy 14.5%, Sci-fi 10.3%, Indie 2.9%
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 65.8%, Strategy 23.3%, Sci-fi 6.1%, Indie 4.8%
The ultimate mash-up of Real-time Strategy and Tower Defense!
Why similar: Tower Defense 66.9%, Strategy 15.8%, Sci-fi 11.8%, Indie 3.9%, Singleplayer 1.7%
《Cloud Castle》It is a strategic tower defense game that builds your defense route by placing and upgrading on a grid map, resisting waves of monsters.
Why similar: Tower Defense 63.7%, Strategy 16.7%, 3D 12%, Indie 5%, Singleplayer 2.6%
Fantasy Tower Defense is a challenging, fast-paced, and strategic Tower Defense game where you frantically build towers, cast spells, and upgrade to stop monsters from reaching your castle.
Why similar: Tower Defense 55.6%, Strategy 30.4%, 3D 10.6%, Singleplayer 3.4%
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 69.7%, Strategy 24.2%, Indie 6.1%
Build your towers of paper before they get out of the box and make a big mess in the room. Manage the turrets, upgrade and be careful where you put them... every decision can be fatal! Watch out for the air units, they have a different route!
Why similar: Tower Defense 71.3%, Strategy 22.9%, Indie 5.8%
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: Tower Defense 51.1%, Strategy 28.9%, Sci-fi 12.6%, Indie 5.8%, Singleplayer 1.7%
Stunning detail of levels, in-depth gameplay, finely tuned balance of all levels and turrets. The new, engaging levels are even more stunning and impressive.
Why similar: Tower Defense 74.2%, Strategy 20.6%, Indie 5.2%
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 71.6%, Strategy 23%, Indie 5.4%
Just Updated! Version 1.1 now has 6 New online Mayhem levels, Character Customization, 35 Defense levels, 25 Skirmish levels, and more!
Why similar: Tower Defense 70.2%, Strategy 22.1%, Indie 6%, Singleplayer 1.7%
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 50.9%, Strategy 28.4%, Sci-fi 13.2%, Indie 7.6%
Crumbled World is a tower defense game where you're tasked to create a maze of defensive structures with the purpose to defend the world crystal. The world crystal is what keeps the world from further collapsing into darkness and without it no hope exists.
Why similar: Tower Defense 63.3%, Strategy 28.6%, Indie 8.1%
In GoD you control a small colonizing expedition lead by your appointed captain. As you delve deeper and deeper into the unknown of star systems to harvest the most valuable minerals in space, you soon find yourself on hostile waters.
Why similar: Tower Defense 48.3%, Strategy 25%, Sci-fi 19.9%, Indie 6.8%
Selknam Defense is more than an exceptional strategy game. It’s a gateway to the past that puts a nation’s destiny into your control. Do you have the skills to alter history and save the Selknam?
Why similar: Tower Defense 67.6%, Strategy 25.4%, Indie 7%
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 81.1%, Strategy 15.3%, Indie 3.6%
Defeat hordes of imps in the very first Tower Defence game about the order of monks! All this to defend humankind from hordes of demons!
Why similar: Tower Defense 69%, Strategy 31%
Evil Defenders is a fun, frenetic defense game: build and upgrade your towers, сast spells to repel enemy forces, use special landmarks and defend the Lands of Evil from invaders! Feel free to play the game in many different ways through unique tower upgrades, a deep skill tree and 100 in-game achievements.
Why similar: Tower Defense 76.3%, Strategy 19.3%, Indie 4.4%
Bots Rush is a unique mix of Tower Defense and logistic puzzle. You will find a set of interesting and complicated game levels, original enemies. Your task is simply to build a network of roads to deliver resources to factories and ammo to towers. Sounds easy, right? Lets check this out.
Why similar: Tower Defense 59.2%, Strategy 32.1%, Indie 8.7%
BYTES:T.R.T.D is a twist on the classic Tower Defense formula. Build your own path to the exit and use special tiles to keep your Bytes safe against a dynamic AI that tries to counter your actions.
Why similar: Tower Defense 48.8%, Strategy 25.6%, Sci-fi 13.4%, 3D 8.6%, Singleplayer 3.6%
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 51.5%, Strategy 28.9%, Sci-fi 11.5%, Indie 8.2%
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 67.5%, Strategy 16.7%, Sci-fi 11.8%, Indie 3%, Singleplayer 1%
In this uniqueTower Defense you will travel through William’s mind in a colored and dreamlike universe.
Why similar: Tower Defense 70.8%, Strategy 21.9%, Indie 7.3%
A Tower Defense game made in the best tradition with 35 unique towers, 70 upgrades and 8 biomes. A 20 level campaign and 2 challenge levels for now, with more to come! Made by an indie developper.
Why similar: Tower Defense 53.3%, Strategy 39.4%, Indie 3.7%, Singleplayer 3.6%
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 78.7%, Strategy 16.1%, Indie 2.9%, Singleplayer 2.3%
Fieldrunners is now available on Steam! Download it now to play the hit tower defense game critics and fans have been raving about. Descend into the world of Fieldrunners, the most anticipated and visually stunning game in tower defense history!
Why similar: Tower Defense 78.7%, Strategy 16.8%, Indie 4.5%
Gemstone Guardians is a tower defense game where selection and combinations are key. Similar to a game of poker, players are given a set of random towers each round and must make the best combinations to prevent the waves of enemies from reaching the end.
Why similar: Tower Defense 54.4%, Strategy 29.6%, 3D 10.1%, Singleplayer 3.2%, Indie 2.8%
Become a dungeon lord to defend your dungeons with the deadliest of traps and insidious contraptions against greedy adventurers and wannabe heroes.
Why similar: Tower Defense 60.8%, Strategy 31.2%, Indie 8%
Cubemen 2 is a fast paced, action packed, original 3D Strategy game where you use your little Cubemen units to defend and attack enemies in a range of awesome game modes including CTF, Skirmish, Territory and more.
Why similar: Tower Defense 63.6%, Strategy 28%, Indie 8.4%
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 72.8%, Strategy 14.1%, Sci-fi 9.1%, Indie 2.2%, Singleplayer 1.7%
Build towers, defend your main structure from waves of enemies in an intense strategy game. Prove your skills, join the legends!
Why similar: Tower Defense 55.9%, Strategy 30.8%, 3D 10.7%, Singleplayer 2.6%
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 51.8%, Strategy 21.5%, Sci-fi 13%, 3D 8.8%, Singleplayer 2.9%
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: Tower Defense 44.4%, Strategy 36.7%, Sci-fi 15.1%, Indie 2.9%, Singleplayer 0.9%
Immerse yourself in an epic yet whimsical journey to defend the crystals from hordes of enemies, each more broken-down than the next, with a whole arsenal of tricks! Fight on the plains, mountains, swamps, deserts and many others by adapting your strategy.
Why similar: Tower Defense 61%, Strategy 25.9%, 3D 9.2%, Singleplayer 3.9%
Terrorhedron is the 3D, cooperative tower defense game for the PC. Unmatched challenge and complexity is introduced to the genre through 3 dimensional gameplay, micro-strategy through programmable turrets and 'edge of seat' gameplay is extended to multiplayer with up to 8 players online co-op.
Why similar: Tower Defense 80.1%, Strategy 14.7%, Indie 5.2%
Get ready to defend from murderous robots. Use your cast of towers to defend from the robots in this 3D strategy game.
Why similar: Tower Defense 59.9%, Strategy 25.8%, 3D 7.9%, Singleplayer 3.8%, Indie 2.7%
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 74.6%, Strategy 25.4%
Do you like Tower Defense games with Strategy elements? Well, look no further! We've got exactly what you're looking for! Get ready to defend your settlement from enemies using a huge arsenal of towers!
Why similar: Tower Defense 65.1%, Strategy 21.4%, 3D 13.4%, Indie 0.1%
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: Tower Defense 44%, Strategy 37.6%, Sci-fi 14.7%, Indie 2.2%, Singleplayer 1.5%
Gunpowder and Sorcery Squad-Based Tower Defense game made by just one person
Why similar: Tower Defense 51.2%, Strategy 26.7%, Sci-fi 17.7%, Indie 2.4%, Singleplayer 2%
Enemies have landed on your planet and brought a Big Bomb with them, which they intend to use to destroy your planet. Your task is to stop them!
Why similar: Tower Defense 58.1%, Strategy 21.5%, Sci-fi 16.7%, Singleplayer 3.6%
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 84.2%, Strategy 15.8%
Fire with Fire is an online player vs player tower defense strategy game about ascendant fireball creatures fighting over the last remaining fuel sources of a dying planet. Save the trees and rise up the leader boards. New unique towers, creeps and arenas in development.
Why similar: Tower Defense 72.6%, Strategy 21.5%, Indie 5.9%
We invite you to join a trip to little islands of jolly forms. We will be thankful to you, the great strategist, if you help us to get rid of gluttonous rabbits.
Why similar: Tower Defense 51.9%, Strategy 37.7%, Indie 10.4%
A tower defense game about about 10 guardians who protect crystals.Anyway, It's Simple!But it's a bit challenging!Defend the crystal from a large number of demons and become a legendary guardian!
Why similar: Tower Defense 66.9%, Strategy 26.8%, Singleplayer 3.3%, Indie 3%
Rampart Defense is a classic tower defense game where you strategically deploy troops and vehicles to protect your colony from waves of enemies.
Why similar: Tower Defense 57.9%, Strategy 24.2%, Sci-fi 14%, Indie 1.9%, Singleplayer 1.9%
Defend your kingdom by fighting back against an approaching robot invasion. Place, upgrade, and relocate elementally-charged towers strategically to destroy incoming robots. Watch as elements collide and combine to create explosive reactions!
Why similar: Tower Defense 56.2%, Strategy 22.8%, Sci-fi 9.7%, 3D 7.9%, Singleplayer 3.3%
You are an archer tasked with defending a castle from invading monsters. Inside the castle, you can manage resources and harvest crops, gather experience points to level up, and learn new skills and abilities to face stronger enemies.
Why similar: Tower Defense 73.5%, Strategy 21.3%, Singleplayer 3.5%, Indie 1.7%
Modo Defense is a strategy tower defense game. Spin yut, similar to dice, to obtain various resources and summon or strengthen towers. You can customize your tower however you like. Specialize in multi-attack or strong one-by-one! And we have to stop the demons coming in. How far can you stop it?
Why similar: Tower Defense 68.4%, Strategy 27.7%, Singleplayer 3.9%