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Aliens

Featuring extraterrestrial beings, these games often explore themes of space travel, alien invasions, or interstellar diplomacy. Encounter mysterious life forms, defend against alien threats, or uncover the secrets of the cosmos in these otherworldly adventures.

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Tower Defense

A type of game where the player builds defensive structures to stop waves of enemies from reaching and destroying their base. Towers can be equipped with many kinds of weapons, but generally are unable to move. Resources earned by defeating enemies allow for more towers to be built.

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Toptagged Aliens and Tower Defense (143 results)

Explore games tagged Aliens and Tower Defense on itch.io · Upload your games to itch.io to have them show up here.

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An orbital tower defense game with roguelite elements.
Strategy
Play in browser
Protect the city from an unknown alien threat...
Action
Play in browser
Dodge alien attacks and shift into better firing positions to protect the Earth.
Action
Fend off horders of enemies with turrets and stuff.
Strategy
tower defense, pixel art, action, 2d, hero defense,
Platformer
Build and manage a space base with tower defence style combat.
Strategy
A true to life simulation of raising a baby.
Strategy
Play in browser
This is Moo to Main Control. You are our last line of defense against the alien invasion.
Action
Play in browser
Aliens are attacking your mining outpost! Use Moonlight to power your defenses and hold them back!
Strategy
Tower Defence/Twin-Stick Shooter Hybrid Action!
Shooter
Play in browser
The story of how you built the first city on Mars while politely asking the aliens to leave
Strategy
Steampunk Tower Defense FPS
Shooter
An in-progress tower defense game in space
Strategy
Play in browser
Tower Defense just got incorporated.
Strategy
An action- packed, sci-fi tower defense game.
Strategy
Play in browser
Fulfill your curiosity in this arcade shooter with a focus on experimentation, rather than survival.
Action
A fun, action packed Tower Defence / Resource Manager
Strategy
A tower defense game
Strategy
Play in browser
The fate of our world rests on your shoulders...
Shooter
Grow your Orchard, taking all the little plants to this. Destroy the Aliens and prevent them from stealing apples. GO!
Action
Play in browser
You will be playing as Keep fallen space alien creature alive, make it bigger!
Strategy
A Game I made in 48 hours for Ludum Dare 38
Action
Play in browser
Towerdefense
Strategy
They are planning to raid Area 51 again. Do you manage to stop them?
Strategy
Space tower defense game where you create, develop and command your spaceships
Strategy
Alien Growing Tower Defense
Strategy
Play in browser
Build your space colony and defend it from waves of cosmic threats.
Shooter
Play in browser
Space themed tower defense where you create your own path.
Strategy
Survival
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A game about overcoming adversary (alien zombies)
Action
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Send troops and defend from enemies in this fast-paced tower defense game!
Strategy
Play in browser
blast zombies and aliens
Action
Orbital Tower Defense Game. Save Mars from the Alien Invasion by constructing Orbital Array with units called Antons.
Strategy
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Build walls, build defensive turrets, fend off swarms of bloodthirsty xenomorphs, build machines!
Survival
Convert humans into your parasite hosts, whilst defending your king.
Strategy
Play in browser
An arcade style Mission Command meets Tower Defense game...in space.
Shooter
Play in browser
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