
Defend against thousands of enemies in this explosive tower defense game. Deploy upgradable towers and unleash powerful orbital abilities as you try to protect Earth's first colony world from destruction.
60+ similar titles based on shared tags and player behavior. Themes include Tower Defense, Strategy, Singleplayer, Sci-fi.

Defend against thousands of enemies in this explosive tower defense game. Deploy upgradable towers and unleash powerful orbital abilities as you try to protect Earth's first colony world from destruction.

Taur
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?

Defense Grid: The Awakening
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.
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 35.2%, Base Building 15.4%, Real Time Tactics 11.9%, Strategy 8.5%, Robots 8.5%
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 73.5%, Strategy 10.3%, Sci-fi 9.1%, Aliens 7.2%
Great strategy is timeless. Build, adapt, and defend across dynamic maps, solo or online - every session brings new strategies, new solutions, and new surprises. Now is the perfect time to enter the grid.
Why similar: Tower Defense 23.3%, Real Time Tactics 20.6%, Base Building 15.3%, Aliens 13%, Tactical 11.1%
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 25.5%, Competitive 24.7%, Real Time Tactics 22.3%, PvE 10.2%, Tactical 8.2%
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 29.5%, Base Building 17.6%, Isometric 11.9%, Tactical 11.1%, War 8%
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 42.9%, Isometric 18.6%, Aliens 16.4%, Sci-fi 9.2%, Strategy 9.1%
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 28.1%, Isometric 17.7%, Aliens 12.9%, Tactical 11.6%, PvE 10.4%
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 28.6%, Real Time Tactics 15.2%, Robots 15.1%, Base Building 13.5%, Tactical 10.9%
The unstoppable fluid enemy has returned and destroyed every world in its path! Defend against Creeper as it floods across the 3D terrain in this real time strategy game where the enemy is a fluid.
Why similar: Tower Defense 23.6%, Real Time Tactics 22.4%, War 12%, Level Editor 11.8%, Tactical 7.4%
Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics. Defend Earth's remaining colonies using an arsenal of deadly weapons to torch, slice, throw, and impale swarms of alien invaders.
Why similar: Tower Defense 34.2%, Strategy 23.6%, Real-Time 23.4% ★, Base Building 9.9%, Sci-fi 8.8%
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 32.3%, Real Time Tactics 18.4%, Aliens 12.8%, Sci-fi 9.3%, Tactical 7.8%
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 42.1%, Isometric 21.8%, Aliens 14.8%, Sci-fi 7.9%, Strategy 7.2%
Command Mobile Outpost and take XEN Firearm to venture deep into the Signet surveillance off-limit area. Collect unique Weapon Units. Amp up the firepower of the Outpost that fights with you. This is an FTD game - FPS, Tower Defense, Base Building and much more all at the same time.
Why similar: Tower Defense 28.2%, Robots 26.3%, Base Building 20.2%, Sci-fi 9.1%, 3D 6.8%
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: Tower Defense 26.7%, Real Time Tactics 23%, War 14.4%, Base Building 13.3%, Tactical 10.8%
Assemble legendary Spirits and defend against the endless hordes of Hell. A tower defense where you must shape the battlefield and create a maze using the three Hellements. Use Fire, Lightning, and Wind tiles to trap your enemies, or augment your defenses.
Why similar: Tower Defense 30.7%, Real Time Tactics 15.3%, Base Building 13.6%, Tactical 11.1%, Strategy 8.5%
An infinitely replayable multiplayer and single-player tower defense. Defend against waves of enemies and destroy the enemy's king before they destroy yours. Legion TD 2 is a one-of-a-kind game of tactics, teamwork, and prediction. Party as 1-8 players.
Why similar: Tower Defense 32.1%, Competitive 28%, Base Building 13.6%, PvE 10.3%, Strategy 6.8%
Axon TD lets you expand the map boundaries themselves. A huge arsenal of towers and a wide variety of enemies clash in a battlefield that grows to your whims. Engage in single, cooperative, and roguelite gameplay.
Why similar: Tower Defense 26.5%, Real Time Tactics 24.5%, PvE 11.5%, Tactical 9.7%, Robots 8.7%
Command your elven army and defend mystical lands from sea serpents, evil sorcerers, and wave after wave of gnoll tribesman, all with the help of brand-spankin’ new towers, heroes, and spells to fend off every last baddie.
Why similar: Tower Defense 62.5%, Tactical 20%, Strategy 13.1%, Action 4.4%
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 44.7%, Strategy 18.1%, Aliens 12.6%, Sci-fi 9.8%, Tactical 9.3%
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: Real-Time 41% ★, Tower Defense 21.7%, Base Building 12.3%, Aliens 5.6%, Strategy 5.2%
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 39%, Real Time Tactics 24.8%, Strategy 10.9%, Aliens 8.5%, Colorful 8.4%
Infinitode 2 - a strategy in the Tower Defense genre, in which the player will have to build towers to protect his base from endless waves of enemies. The game features huge maps, lots of towers, resource miners, upgrade tree and map editor.
Why similar: Tower Defense 19.8%, Real Time Tactics 19.1%, Level Editor 18%, Moddable 15.8%, PvE 9.5%
"League Tower Defense" is a strategy tower defense game that combines unique defense towers and various upgradeable components to unleash different attack effects. Come and build your perfect defense line.
Why similar: Gun Customization 29.3%, Tower Defense 27%, War 9.7%, Base Building 8.4%, Strategy 7.1%
Defend the solar system from fearsome aliens by sending satellites into orbit in revolutionary tower defense action!
Why similar: Tower Defense 68.5%, Strategy 11.4%, Aliens 8.9%, Sci-fi 7.7%, Action 3.4%
Project Astra Dominium is a Tower Defense game with Basebuilding and Automation elements. Build up your base to become a supply hub for Earth's desperately needed materials, gather resources while defending against an unknown alien threat and improve your tower's and AI capabilities.
Why similar: Tower Defense 23.4%, Gun Customization 22.7%, Base Building 15.8%, Aliens 13.2%, PvE 10.6%
Command your troops through an epic (mis)adventure as you defend exotic lands from dragons, man-eating plants, and ghastly denizens of the underworld -all with flashy new towers, levels, heroes, and more goodies to help you crush your foes in this Fantasy Action Tower Defense game!
Why similar: Tower Defense 75.1%, Strategy 15.9%, Colorful 5.8%, Action 3.2%
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 80.7%, Strategy 13.5%, Sci-fi 5.8%
Choose a planet, build your fortress, and prepare for war. Arm yourself with powerful weapons, deploy troops, and defend your stronghold against relentless attacks. In this action-packed block-builder, survival is earned, and only the strongest will remain.
Why similar: Tower Defense 26%, Base Building 22.5%, Level Editor 17.4%, War 15%, PvE 5.8%
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 17.3%, Tactical 16.5%, Sci-fi 16.2%, Aliens 15.8%, Robots 12.5%
Are you prepared for a thrilling toy army tower defense adventure? Welcome to the Toy Shire! Battle diverse foes in various locations, defend your family, and repel foes from your area. Save the world by strengthening your defense with toy towers!
Why similar: Tower Defense 22.3%, Real Time Tactics 20.5%, Level Editor 14.6%, War 11.6%, Tactical 9.7%
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 60.2%, Strategy 27.1%, Action 12.7%
Fortified is an explosive strategy shooter where players will defend the Earth against a menacing Martian invasion in the 1950s. Play as one-of-four pulp inspired heroes as they fight swarms of terrifying robots with an arsenal of Cold War era weapons and experimental technology.
Why similar: Action 56.9%, Tower Defense 26.9%, Aliens 7.7%, Strategy 5.3%, Sci-fi 3.2%
Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in 4-player co-op. 🚀
Why similar: Real Time Tactics 39.5%, Base Building 29.2%, Strategy 12.2%, Sci-fi 11.2%, Tower Defense 6%
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 64.1%, Sci-fi 19.6%, Strategy 16.3%
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 69.2%, Strategy 21.2%, Sci-fi 9.6%
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 67.5%, Strategy 19.8%, Action 7.4%, Sci-fi 5.2%
SENTRY is an action-defense first person shooter where you defend your spaceship against invading aliens. Plot an escape route through hostile space and battle the enemy across your vessel with the support of traps, turrets and environmental destruction.
Why similar: Tower Defense 41.8%, Aliens 16.5%, Sci-fi 13%, Strategy 10.8%, Colorful 7.6%
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 48.9%, Strategy 28.7%, Sci-fi 22.4%
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: Real-Time 35.2% ★, Strategy 13.7%, War 13.7%, Tactical 12%, Tower Defense 7.8%
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: Tower Defense 33.3%, Real Time Tactics 30.8%, Tactical 14.4%, Strategy 6.7%, Sci-fi 5.2%
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 55.3%, Aliens 23.6%, Strategy 14.6%, Action 6.5%
Wage war across entire solar systems with massive armies at your command. Annihilate enemy forces with world-shattering TITAN-class units, and demolish planets with massive super weapons!
Why similar: Real Time Tactics 28.9%, Base Building 19.8%, Robots 16.7%, War 15.7%, Strategy 9.9%
Survivor Challenge TD - is a Tower Defense game where you manage a single tower and add upgrades to it. Buy abilities, enhance upgrades, and defeat the boss!
Why similar: Tower Defense 42.2%, Tactical 16.9%, PvE 13.1%, Strategy 9.5%, Colorful 8.1%
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 65.9%, Strategy 19.4%, Sci-fi 14.7%
Cyber Tower 2048 is an action tower defense game where players fight insectoids by building defenses and developing tactics.
Why similar: Tower Defense 46.4%, Robots 25.7%, Colorful 9.6%, Sci-fi 7.1%, Action 6.9%
Fortify is a real-time strategy game with a tower defense twist. Defend your castle from attacking monsters and siege weapons by using ranged and melee defenders, catapults, cannons, oil fields and more. You start at the iron age, advancing to the medieval age, and later, the imperial age.
A defense RTS where you can move turrets at will. Extract resources, upgrade technology, and defend against enemy swarms in a gripping space campaign. Hold the line, set up your turrets, and brace for screen-filling hordes!
Why similar: Tower Defense 31.2%, Base Building 21.2%, War 16%, Sci-fi 10.2%, 3D 9.8%
Cartridge Defense is a tower defense game with over 300 distinct collectible cards that you will use to create your own decks to defend against robots in the cyberpunk inspired future. Play cards (cartridges) to spawn towers, upgrades, special abilities and more in a campaign or rogue-like mode.
Why similar: Tower Defense 52.1%, PvE 20.1%, Sci-fi 16.1%, Strategy 11.6%
Jump a rift, fight off monsters, plunder their world. A strategic mix of juicy tower loadouts, varied monster behaviors, and forgiving mechanics.
Why similar: Tower Defense 27.2%, Base Building 16.5%, Real Time Tactics 16.3%, Isometric 15.4%, PvE 11.1%
Throbax TD is the "Tower Defense" game you are looking for: Help Ughlar fight his way through 50 levels, buy over 100 upgrades and get all of the 50+ achievements.
Why similar: Tower Defense 31.2%, Base Building 19.1%, PvE 14.1%, Aliens 12.2%, Sci-fi 9.1%
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 72.4%, Isometric 16.2%, Strategy 11.5%
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 32.7%, Real Time Tactics 27.2%, War 11.4%, Strategy 9.1%, Sci-fi 9%
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 52.3%, Real Time Tactics 27.3%, Strategy 13.9%, Action 6.5%
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 43.9%, Tactical 18%, Isometric 16.8%, Sci-fi 13.4%, Strategy 7.9%
Lead an armored squad through the perils of this reversed tower defense action-strategy game!
Why similar: Tower Defense 48.1%, Strategy 25.2%, Sci-fi 12.4%, Aliens 8.5%, Action 5.8%
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 72%, Strategy 20.4%, Action 7.6%
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: Tower Defense 48.7%, Strategy 35.9%, Action 15.4%
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 86.5%, Strategy 13.5%