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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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New & populartagged 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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This is Moo to Main Control. You are our last line of defense against the alien invasion.
Action
Play in browser
Towerdefense
Strategy
In this game you must survive the aliens while you are a farmer!
Strategy
The fate of our world rests on your shoulders...
Shooter
This game is made in 2016 for Ludum Dare 36.
Play in browser
The story of how you built the first city on Mars while politely asking the aliens to leave
Strategy
Space aliens invade robots researching black holes!
Strategy
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Submission for the Web Game Challenge on Dev.to
Strategy
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Breaking into Area 51, you discover aliens trying to take over humanity by cultivating special brainwashing tomatoes.
Action
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scale up your malign invasive colony in a microbial tower defence game
Survival
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aliens are jerks sometimes...
Action
A submission for the 2024 GMTK Game Jam
Action
Play in browser
A first person tower defence game set on an alien planet.
Shooter
A ex game where robots build towers to fight aliens. This was walking just a few hours ago.
Play in browser
A little farming simulator
Simulation
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defenda-se
Strategy
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Fantasy, Military, Sci-Fi Tower Defense game.
Strategy
Fight against aliens by summoning mining and warrior cats!
Strategy
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Convert humans into your parasite hosts, whilst defending your king.
Strategy
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Defend the beacon from attacking aliens for as long as possible!
Action
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Defend your Kingdom from an Alien Invasion in this Tower Defense Game
Strategy
Alien goop vs zombies mixed with tower defense
Action
You've been flung from your homeworld onto a gaseous new planet...
Platformer
Don't think. Kill.
Strategy
Defend your base against the terrors of space.
Strategy
Protect the last garden on Earth
Action
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Defend the Exodus Heart from diesel punk invaders !
Strategy
A game about overcoming adversary (alien zombies)
Action
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In this rogue-like tower defense, you're an AI whose mission is to explore caves, collect resources, and combat aliens.
Strategy
Galaga, but you are the aliens
Action
Finllay Invading Earth
Action
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Send waves of alien machines to defeat a Giant Robot
Strategy
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