
Defend your empire in a sci-fi tower defense game. Build deadly combinations of railguns, lasers, gravity wells, drones, and cannons across three maps, 50 levels per map, and four difficulty modes.
60+ similar titles based on shared tags and player behavior. Themes include Strategy, Tower Defense, Singleplayer, Top-Down.

Defend your empire in a sci-fi tower defense game. Build deadly combinations of railguns, lasers, gravity wells, drones, and cannons across three maps, 50 levels per map, and four difficulty modes.

Old School Tower Defense
Build and upgrade towers with unique abilities to stop waves of enemies. With the advanced augment system, every 3 rounds you can boost your defenses and create strategies that fit your playstyle.

Tac Tower
Build, defend and conquer in a strategic 3D tower defense game filled with unique enemies and challenging maps!
Build and upgrade towers with unique abilities to stop waves of enemies. With the advanced augment system, every 3 rounds you can boost your defenses and create strategies that fit your playstyle.
Why similar: Tower Defense 34%, Strategy 25.2%, Stylized 10.8%, Top-Down 10.1%, Tactical 6.8%
Build, defend and conquer in a strategic 3D tower defense game filled with unique enemies and challenging maps!
Why similar: Tower Defense 35.3%, Strategy 17.6%, Stylized 12%, Top-Down 11.3%, Tactical 7.6%
Slime Virus Defense is a 2D strategy game where animal towers defend your computer from invading virus-like slimes. Use unique tower classes and skills to develop strategies and stop the slime invasion before it's too late!
Why similar: Tower Defense 37.6%, Strategy 29%, Top-Down 10.9%, Tactical 7.6%, Sci-fi 6.6%
Dig minerals, manufacture ammunition, and build defense towers to fend off swarms of insects. A tower defense game with light production line elements.
Why similar: Tower Defense 31.4%, Strategy 23.3%, Sci-fi 8.3%, Base Building 7.9%, Resource Management 7.6%
Station 42 is a space station builder and tower defense set in a dynamic, semi-realistic environment. Build an interconnected mining grid, chart moving orbital paths, and harness violent cosmic events to defend your outpost against the harsh realities of unknown space.
Why similar: Tower Defense 42.9%, Strategy 25.5%, Top-Down 12.3%, Futuristic 11%, 2D 6%
Dead TD is a tower defense game that was inspired by the old school original maps from WC3. It features a wide range of towers that upgrade into more powerful types and features a range of different abilities that can be used to create the ultimate defense.
Why similar: Tower Defense 49.4%, Strategy 29.8%, Top-Down 13%, 2D 6.7%, Singleplayer 1.1%
The final part of the Cybernetica trilogy. The action takes place in the center of a small town. Cybernetica is a tower defense game. The player's task is to destroy enemies with the help of buildings before they cross the base. With the help of 7 towers you need to cope with 85 waves of enemies.
Why similar: Strategy 40%, Tower Defense 33.4%, Base Building 11.9%, Top-Down 11.5%, Casual 2.2%
Find the best combinations of projectiles and components to create the ultimate weapon. Mutate and upgrade your components to create stronger weapons. Fight wave after wave of monsters to reach the top.
Why similar: Tower Defense 37.4%, Strategy 27.8%, Futuristic 10.7%, Sci-fi 9.2%, Top-Down 7.8%
An incredible asteroid assault is about to begin! Take command of the planet's defenses and prevent extinction in this planetary Tower Defense game.
Why similar: Strategy 41.7%, Tower Defense 34.8%, Space 13.9%, 2D 5.5%, Indie 3%
Terra Forma is a pixelated 2D tower defense, inspired by Flash-age classics. Build a dozen unique towers and create even more fusions by combining shock, ice, fire, and iron. Prove your command prowess one final time, and defend mankind's final hope.
Why similar: Tower Defense 42.4%, Strategy 23.9%, Top-Down 11.2%, Futuristic 9.4%, Sci-fi 6.2%
An asynchronous multiplayer tower defense game were you either maze towers to defend against other players robots and/or assemble your robots and invade other players mazes.
Why similar: Tower Defense 35.3%, Strategy 27%, Futuristic 12.9%, Top-Down 11.3%, Base Building 7.2%
Space Run Galaxy is the sequel to Space Run, the game from one-man studio Passtech, which seduced hundreds of thousands of players with its dynamic and original gameplay. By twisting the tower-defense game style, Space Run offered an addictive real-time spaceship construction strategy experience.
Why similar: Tower Defense 50.5%, Strategy 31.7%, Space 13%, Indie 4.7%
Space Base is an action-packed tower defence game, where you aim to protect your planets from the incoming forces of enemy ships and aliens by any means necessary. Build up your defences as stronger and stronger waves of enemies arrive to reach the highest score possible.
Why similar: Tower Defense 35.6%, Strategy 18.3%, Top-Down 11.3%, Base Building 10.7%, Space 7%
A tower defense strategy science fiction game, in the future era, when aliens invade the solar system, players need to build various turrets to resist alien attacks and guard the Milky Way and solar system.
Why similar: Tower Defense 39%, Strategy 23.2%, Top-Down 8.4%, Space 7.6%, Futuristic 7.5%
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 45%, Strategy 27.2%, Top-Down 12.5%, Sci-fi 7%, 2D 6.2%
Defend your planet from relentless stream of incoming asteroids in this fast-paced 2D tower defence game. Strategically place defensive buildings and upgrade your arsenal to protect your world from destruction!
Why similar: Tower Defense 39.6%, Strategy 23.3%, Space 8.8%, Sci-fi 6.7%, Tactical 6.3%
We've traveled to the past to conquer these fertile lands. Now, you must defend them from the blood cult intent on taking it for themselves. Be careful though: from where their blood is spilled, ancient magicks empower whomever is still alive.
Why similar: Tower Defense 38.8%, Strategy 21.5%, Futuristic 14.5%, Tactical 6.8%, Top-Down 6.7%
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 55%, Strategy 19.7%, Space 16.3%, Sci-fi 6.1%, Indie 2.5%
Project VTS is a real-time TD game. You'll need to build your defence around your base and defend against different enemies from all directions in various terrains of the alien planet.Use your turrets, obstacles, power supply, resource facillities to defend your base.
Why similar: Tower Defense 39.7%, Strategy 14.9%, Top-Down 13%, Futuristic 12.8%, Base Building 11.5%
A Chinese underworld-themed TD game. Alter paths with anchors, build towers freely. Boost tower stats/effects by brewing the Pot of Oblivion with herbs. Place talisman traps on paths. Features varied maps, initial path challenges, and strategic obstacles.
Why similar: Tower Defense 51.8%, Strategy 22.1%, 2D 6.8%, Stylized 6.8%, Resource Management 4.4%
Defend the clearance shelf. When the lights go out, the seasonal war begins. Lead your unsold Easter stock against waves of full-price enemies — before morning reveals the secret.
Why similar: Tower Defense 36.5%, Strategy 26.8%, Top-Down 11.8%, Base Building 7.3%, 2D 5.8%
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 43%, Strategy 18.1%, Base Building 10.2%, Futuristic 6.6%, Sci-fi 6.1%
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 56.9%, Strategy 30.4%, Sci-fi 6.4%, Indie 5.6%, Singleplayer 0.7%
Asteria is under siege! Take up arms as the commander and find the perfect strategy in this hero filled tower defense game. Will you become a Defender of Asteria or fall short?
Why similar: Tower Defense 50.5%, Strategy 31.2%, Top-Down 14.9%, Indie 2.4%, Singleplayer 1.1%
Defend your base by placing towers strategically, forming interconnected systems that depend on one another. Adapt your strategy to different environments and enemy waves, exploiting their weaknesses. In System Status: SuperCritical, resources are scarce and critical failure is always an option.
Why similar: Tower Defense 33.6%, Strategy 19.2%, Space 11.4%, Top-Down 7.8%, Futuristic 7.1%
Build towers and learn abilities to defend against swarms of hundreds of on-screen hostile alien creatures. Choose between sets of randomized upgrades that both upgrade you and the alien swarm. From enormous explosions to far-reaching flamethrowers, no two games are the same.
Why similar: Tower Defense 30%, Strategy 14.7%, Futuristic 10.5%, Base Building 9.5%, Sci-fi 7.3%
Defend the galaxy against a slimey pandemic in this classic Tower Defence game. Build towers to defend these planets and strategize against the infection.
Why similar: Tower Defense 41.3%, Strategy 28.9%, Top-Down 9%, Base Building 8.2%, 2D 6.3%
Build and upgrade towers to defend your crystal fortress from endless waves of enemies in this classic circular tower defense game. Strategic placement and powerful upgrades are key to survival.
Why similar: Tower Defense 43.9%, Strategy 37.7%, Resource Management 7.3%, 2D 6.9%, Casual 2.6%
Von Neumann Project is about a self replicating probe as it charts the galaxies, peacefully of course. Mine, build, expand, and explore in this sci-fi RTS. Remember to have as little impact on your surroundings as possible and protect yourself at all costs.
Why similar: Tower Defense 39.6%, Strategy 15%, Top-Down 10.4%, Base Building 8.9%, Space 6.7%
Defend tiny planets by rotating them under enemy attacks. Build towers, smash meteors, unlock new mechanics, and grow stronger after every defeat. A cozy roguelite tower defense focused on fun, experimentation, and satisfying progression.
Why similar: Tower Defense 42.8%, Strategy 21.8%, Base Building 9.6%, Tactical 6.4%, Stylized 5.4%
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Why similar: Tower Defense 42.5%, Strategy 38.7%, Sci-fi 8.9%, Top-Down 4.5%, Indie 4.4%
Solder diodes, capacitors and other electronic components to defend your motherboard from waves of evil viruses!
Why similar: Tower Defense 45.9%, Strategy 27.9%, Tactical 10.6%, Base Building 9.1%, Indie 3%
Gunpowder and Sorcery Squad-Based Tower Defense game made by just one person
Why similar: Tower Defense 41.3%, Strategy 31.1%, Tactical 9.2%, Sci-fi 9.1%, 2D 6.6%
A game where you will command 4 heroes (TD) in the defense of Earth from an army of AIs. Create cannons, place them in strategic locations, and level up. Each stage increases in difficulty progressively. You will also command the 4 heroes' ships and can even count on the help of a super robot.
Why similar: Tower Defense 31.6%, Strategy 22.4%, Futuristic 9%, Top-Down 8.8%, Space 8.8%
A new charm of traditional tower defense.Hordes of unknown aliens have descended upon Earth. On dynamic scene maps, you need cleverly build defense towers to construct their path of advance, combine with controllable targeting strategies, and stop the aliens' assault.
Why similar: Tower Defense 46.7%, Strategy 19.7%, Sci-fi 11.6%, Base Building 10.4%, Top-Down 7.5%
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 51.9%, Strategy 37.9%, Indie 6.7%, 2D 3.4%
Protect the asteroid mine's reactor from swarms of supersized alien protozoa. This game's groundbreaking AI system uses machine learning to adapt to your strategy in real-time as you build and upgrade your defenses. Fight evolution itself.
Why similar: Tower Defense 35.8%, Strategy 26.7%, Sci-fi 8.8%, Futuristic 8.7%, Top-Down 7.5%
Command your own fortress in FTL-like real-time battles! Crush the enemy fortress with unrelenting bombardment or seize it with carefully executed invasion.
Why similar: Tower Defense 37.8%, Strategy 37.3%, Base Building 12.7%, 2D 5.6%, Indie 5.5%
Endless TD: online co-op and PvP tower defense for 1–4 players. Build wild damage types + talent combos, merge towers into monsters, and survive evolving maps, weather, and bosses in endless waves. Climb leaderboards for highest wave (solo & team).
Why similar: Tower Defense 43.1%, Strategy 25.6%, Tactical 12.6%, Stylized 8.6%, Top-Down 8.1%
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: Tower Defense 33.4%, Strategy 24.2%, Space 8.4%, Base Building 7.1%, Sci-fi 6.4%
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 67%, Strategy 19.8%, Top-Down 5.1%, Tactical 3.3%, Indie 2.5%
Hold the line in a neon sci-fi siege. Deploy and upgrade 14 distinct towers, expose every enemy's weakness, and survive 50 escalating waves and relentless boss assaults. Every threat has a counter — find it before your base falls.
Why similar: Tower Defense 36.7%, Strategy 18.4%, Top-Down 10.7%, Sci-fi 9.7%, Space 6.6%
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 43.5%, Strategy 26.1%, Top-Down 12.3%, Space 8.3%, Sci-fi 7%
In Radical Tower Defense, harness shifting core chips to forge a unique steel defense. Each choice reshapes your combat style. Unlock architectures, explore chip synergies, ignite tactical reactions. Don’t just defend—become a blade to break formations, strike the heartland, crush the enemy lair!
Why similar: Tower Defense 41.8%, Strategy 25.6%, Base Building 11.8%, Resource Management 7.8%, Top-Down 7.5%
Defend a displaced royal keep in a roguelite tower-defense strategy game. Build, scout, gather resources, and send units down the path to destroy enemy towers, outposts, and bases across unstable timelines as each run escalates.
Why similar: Tower Defense 36.2%, Strategy 23.2%, Base Building 11.2%, Resource Management 8.8%, Tactical 7.9%
Trample, stomp, wrestle, crush, chastise, tease or do whatever it takes to protect your statue from the males!
Why similar: Tower Defense 40.4%, Strategy 31.6%, Tactical 11%, Base Building 9.5%, Resource Management 6.3%
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 39.3%, Tower Defense 38.5%, Sci-fi 14.3%, Indie 7.9%
The only tower defense game in the world that is played in the terminal. I didn't make this game because it was a good idea, I made it because I thought it was cool.
Why similar: Tower Defense 49%, Strategy 30.1%, Top-Down 14.6%, 2D 5.5%, Singleplayer 0.9%
A cozy & chaotic tower defense game where you place cleaning towers to combo through desk messes. ILLUMINATE, WET WIPE, and ZAP STICK your way to sparkling while facing down CAT MAYHEM!
Why similar: Tower Defense 44.3%, Strategy 26.1%, Top-Down 12.7%, 2D 6.3%, Tactical 5.6%
A strategic tower-defense where you control powerfull drones. Unlock new tower and use specific technologies to defend your base on Thukothea!
Why similar: Tower Defense 48.3%, Strategy 20.4%, Base Building 7.1%, Futuristic 5.6%, Tactical 5.6%
The ultimate mash-up of Real-time Strategy and Tower Defense!
Why similar: Tower Defense 60.8%, Strategy 20.8%, Sci-fi 6.9%, Top-Down 4.7%, Indie 3.6%
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Why similar: Tower Defense 65.9%, Strategy 19.1%, Sci-fi 6%, Space 4.2%, Indie 2.7%
YORG.io is a game with an original twist on supply chains and zombies. Your goal is to build a base which survives the night which is when zombies attack. Build and upgrade defensive towers to protect your base and try to survive as long as possible.
Why similar: Tower Defense 48.6%, Strategy 29.8%, Base Building 7.7%, Indie 5.3%, Resource Management 5.2%
Build by day. Survive by night. A focused medieval tower defense where every decision is permanent.
Why similar: Tower Defense 36.7%, Strategy 21.8%, Base Building 11.3%, Resource Management 7.6%, Tactical 7.2%
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 64.1%, Strategy 29.7%, Indie 5%, Casual 1.3%
A 2D pixel art tower defense game with unparalleled strategic depth. Deploy modules to redirect enemies, use tactical chips to command the battlefield, and upgrade towers with multi-branch modifications to protect humanity's vital Stellacore energy.
Why similar: Tower Defense 39.8%, Strategy 23.2%, Space 9.7%, Futuristic 8%, Sci-fi 6.1%
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 56%, Strategy 36.6%, Indie 7.4%
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 41.8%, Strategy 23.6%, Space 8.4%, Futuristic 8.3%, Sci-fi 6.4%
A strategic tower defense set in World War I. Defend Belgian trenches, manage your soldiers, their supplies and fatigue. Every choice matters. This is not about conquering — it’s about holding the line.
Why similar: Tower Defense 46.5%, Strategy 28.3%, Tactical 12.2%, Resource Management 7%, 2D 5.3%
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: Strategy 49.3%, Tower Defense 46.1%, Indie 3.3%, Singleplayer 1.3%