Galactic Missile Defense
Galactic Missile Defense is a shooter and tower defense game, where you must protect Earth from the invading Martians that declared war on our…
59% of 27 Steam reviews are positive$1.99
Games like Galactic Tower Defense
Chasing that tense and fast-paced feeling you got from Galactic Tower Defense? These games make natural next picks for you.
Galactic Missile Defense
Galactic Missile Defense is a shooter and tower defense game, where you must protect Earth from the invading Martians that declared war on our planet just because a space rover accidentally ruined their picnic!
Tense, Fast-paced
59% of 27 Steam reviews are positive$1.99Private Mining Company
Private Mining Company is a tower defense game with permadeath and extraction. Turn up the drills to make more money, but doing so brings more bugs. Extract your surviving soldiers, upgrade your army, and take on harder contracts.
Tense
$7.99Planet TD
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!
73% of 123 Steam reviews are positive$2.99Solar Defense
Solar Defense is a Military Sci-Fi inspired Tower Defense game focused heavily on strategy and decision making. Defend key locations and repel the Pilakarr forces back to their home world to end their attack and bring an end to this war.
Tense
100% of 1 Steam reviews are positive$4.99银河战争一(Galactic Wars One）
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.
Tense
$1.60Siege of Centauri
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.
Tense, Fast-paced
64% of 352 Steam reviews are positive$14.99Galaxy Defense War
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and equipment to form a combat-ready team to resist alien invaders.
Fast-paced
97% of 112 Steam reviews are positivePlayers online now: 1$7.72Space Cycle
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!
Tense, Fast-paced
93% of 179 Steam reviews are positive$1.99Galaxy Defenders (Classic TD)
A classic tower defense game set in space! Build and upgrade towers, defend your portal from waves of alien invaders, and outsmart evolving threats across handcrafted and procedural maps.
$0.99ShellMobile: Titan Rampart
On the cosmic frontier, humanity has fought alien species for a century. As traditional defenses fall to new-gen alien mechs, tech giant ShellMobile—human-centered at its core—kindles new hope via breakthroughs in extraterrestrial titanium ore research.
Tense, Fast-paced
97% of 181 Steam reviews are positive$5.99SpaceMine
SpaceMine is a third-person tower defence game where your mission is to defend your mining operation by building towers and barriers to hold off waves of local fauna and collect enough resources to meet the company's quota.
Tense
38% of 13 Steam reviews are positiveFreeGalaxy Control: 3D Strategy
Build your base and battle with other players to control the galaxy! Galaxy Control is an ultimate space combat strategy game with fast-paced combats! Gather minerals and extract uranium, defend your base with laser towers, missile turrets, cannons, walls and mines.
59% of 551 Steam reviews are positivePlayers online now: 29Free
Cheaper than Galactic Tower Defense
Planet TD
6 different types of towers! 4 planets with different characteristics! 25 different enemies.
73% of 123 Steam reviews are positive$2.99
Solar Defense
Solar Defense is a Military Sci-Fi inspired Tower Defense game focused heavily on strategy and decision making.
100% of 1 Steam reviews are positive$4.99
银河战争一(Galactic Wars One）
A tower defense strategy science fiction game, in the future era, when aliens invade the solar system, players need to build various turrets to…
$1.60
Galaxy Defense War
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and…
97% of 112 Steam reviews are positivePlayers online now: 1$7.72
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe.
93% of 179 Steam reviews are positive$1.99
ShellMobile: Titan Rampart
On the cosmic frontier, humanity has fought alien species for a century.
97% of 181 Steam reviews are positive$5.99
Galaxy Defenders (Classic TD)
A classic tower defense game set in space! Build and upgrade towers, defend your portal from waves of alien invaders, and outsmart evolving threats…
$0.99
Stop Them All
A minimalist sci-fi tower defense. Buy soldiers and upgrade them, defeat waves of enemies, hold your lines.
$2.99
Galaxy of Drones
In GoD you control a small colonizing expedition lead by your appointed captain.
0% of 7 Steam reviews are positive$2.99
DEFENDER OF EARTH VS THE ALIEN ARMADA
Defender of Earth vs The Alien Armada is an exciting space themed tower defense game!
50% of 2 Steam reviews are positive$1.99
Ancient Planet Tower Defense
Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders.
84% of 878 Steam reviews are positivePlayers online now: 8$4.99
Hidden gems like Galactic Tower Defense
ShellMobile: Titan Rampart
On the cosmic frontier, humanity has fought alien species for a century.
97% of 181 Steam reviews are positive$5.99
Galaxy Defense War
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and…
97% of 112 Steam reviews are positivePlayers online now: 1$7.72
D.O.T. Defence
Welcome to the frontlines! Build towers, muster armies, and conquer the map.
85% of 212 Steam reviews are positive$9.74
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe.
93% of 179 Steam reviews are positive$1.99
Drill Core
Run a mining crew on hostile alien worlds, balancing profit against the lives of your people.
84% of 2,159 Steam reviews are positivePlayers online now: 23$9.99
2112TD: Tower Defense Survival
Get ready for the ULTIMATE tower defense onslaught. Build, deploy, research and upgrade your defenses in this epic, old school RTS inspired sci-fi…
87% of 434 Steam reviews are positivePlayers online now: 2$4.79
Colony Siege
Colony Siege combines the best of RTS and tower defense, including base building, mazing, and unit physics.
91% of 199 Steam reviews are positive$19.99
Planet TD
6 different types of towers! 4 planets with different characteristics! 25 different enemies.
73% of 123 Steam reviews are positive$2.99
Ancient Planet Tower Defense
Ancient Planet is classic tower defense game. The stronghold of an ancient civilization has been invaded by hordes of alien raiders.
84% of 878 Steam reviews are positivePlayers online now: 8$4.99
Galcon 2: Galactic Conquest
Galcon 2 is a demolition derby in space! Send swarms of ships from planet to planet to conquer the galaxy in this fast paced multiplayer strategy…
83% of 873 Steam reviews are positivePlayers online now: 1Free
Space Run
You play a daring space transporter, building and defending a cargo ship in real time as you race it through hostile space.
85% of 1,774 Steam reviews are positivePlayers online now: 1$4.99
Siege of Centauri
Defend against thousands of enemies in this explosive tower defense game.
64% of 352 Steam reviews are positive$14.99
Newest games like Galactic Tower Defense
Orbital Tower Defence
Build towers on rotating orbital rings to defend your planet.
100% of 4 Steam reviews are positive$0.99
D.O.T. Defence
Welcome to the frontlines! Build towers, muster armies, and conquer the map.
85% of 212 Steam reviews are positive$9.74
Stellarcraft
Stellarcraft is a sci-fi tower defense adventure: explore alien planets, gather resources, build defenses, and fend off waves of enemies, solo or in…
88% of 76 Steam reviews are positivePlayers online now: 1$9.99
ShellMobile: Titan Rampart
On the cosmic frontier, humanity has fought alien species for a century.
97% of 181 Steam reviews are positive$5.99
Galaxy Defense War
'Galaxy Defense War' is a roguelike tower defense game where you need to select suitable galactic principles from randomly dropped heroes and…
97% of 112 Steam reviews are positivePlayers online now: 1$7.72
Tac Tower
Build, defend and conquer in a strategic 3D tower defense game filled with unique enemies and challenging maps!
100% of 7 Steam reviews are positive$1.99
Neon Colony
Neon Colony is an isometric tower defense game where you build your own road to access and harvest the resources of an alien planet.
100% of 5 Steam reviews are positive$12.99
Drill Core
Run a mining crew on hostile alien worlds, balancing profit against the lives of your people.
84% of 2,159 Steam reviews are positivePlayers online now: 23$9.99
Desperate Place
Desperate Place is a strategic tower defense game where you play as a crew member who wakes up early on a damaged colonization starship.
66% of 253 Steam reviews are positive$10.99
Cosmic Raze
Cosmic Raze is a sci-fi tower defense strategy game. Control advanced weapons, build powerful synergies, and then blast away as aliens attempt to…
81% of 21 Steam reviews are positive$3.49
Space Cycle
Space resources are the battleground for warring factions. As a Space Defense Officer, protect your faction's assets in a vast, hostile universe.
93% of 179 Steam reviews are positive$1.99
Milky Way TD SURVIVORS AUTOBATTLER RTS
Milky Way is a unique mix of Tower Defense, RTS, Auto-Battler and Survivors.
86% of 21 Steam reviews are positive$7.99