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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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thekillerjack3's Collection
thekillerjack3
Space Games
yakuzadave

Top rated free
tagged Aliens and Tower Defense (33 results)

33 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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Orbital Defense Program
An orbital tower defense game with roguelite elements.
CyreneGames
Rated 4.6 out of 5 stars
(30 total ratings)
Strategy
Play in browser
GIF
Global Defense Corps
Protect the city from an unknown alien threat...
Sean Noonan
Rated 4.2 out of 5 stars
(6 total ratings)
Action
Play in browser
Space Defender
An action- packed, sci-fi tower defense game.
nikthegreat2020
Rated 5.0 out of 5 stars
(3 total ratings)
Strategy
Play in browser
Parenthood
A true to life simulation of raising a baby.
Lana Lux
Rated 4.7 out of 5 stars
(3 total ratings)
Strategy
Play in browser
Reactor Defence
Small tower defence game.
Dene
Rated 3.8 out of 5 stars
(5 total ratings)
Strategy
Play in browser
Steam Odyssey
Steampunk Tower Defense FPS
BucketStudios
Rated 5.0 out of 5 stars
(2 total ratings)
Shooter
Invader TD
A tower defense game
Creativer Games Studio
Rated 5.0 out of 5 stars
(2 total ratings)
Strategy
Play in browser
Véia Defense: Aliens Attack
Grow your Orchard, taking all the little plants to this. Destroy the Aliens and prevent them from stealing apples. GO!
Madpix Game Studio
Rated 5.0 out of 5 stars
(2 total ratings)
Action
Play in browser
How i Conquered your Planet
The story of how you built the first city on Mars while politely asking the aliens to leave
Autentica
Rated 4.0 out of 5 stars
(2 total ratings)
Strategy
GIF
Mecha Defence
A game about overcoming adversary (alien zombies)
danfriedz
Rated 4.0 out of 5 stars
(2 total ratings)
Action
Play in browser
Smol Defense Alpha Demo
Fend off horders of enemies with turrets and stuff.
ｈｅｉｎｎ
Rated 4.0 out of 5 stars
(2 total ratings)
Strategy
Asteroid Swoop
Build your space colony and defend it from waves of cosmic threats.
Big Soup
Rated 5.0 out of 5 stars
(1 total ratings)
Shooter
Play in browser
Space Game: The Eternal Journal
Fulfill your curiosity in this arcade shooter with a focus on experimentation, rather than survival.
The Paper Pilot
Rated 5.0 out of 5 stars
(1 total ratings)
Action
Spacecraft Defenders
Space themed tower defense where you create your own path.
zeldafan22
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
IT THRIVES
Alien Growing Tower Defense
Zeno
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
Play in browser
Farmers VS Aliens
Towerdefense
WizardMerlijn
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
Protect Area 51
kbent1
Rated 5.0 out of 5 stars
(1 total ratings)
Action
Farmer's Last Stand
TheGameFabricator
Rated 5.0 out of 5 stars
(1 total ratings)
Survival
Play in browser
Lunar Voyage
An in-progress tower defense game in space
Tycro Games
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
Play in browser
SpaceTrouble
A fun, action packed Tower Defence / Resource Manager
JakobSailer
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
UFO-Defence
UFO-Defence is mostly a Tower defence with some elements of city building games.
SvartTand
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
The Great Beyond
Build and manage a space base with tower defence style combat.
Michael Borrego
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
Moon Corp. Tower Defense - Test Branch
Tower Defense just got incorporated.
Kite Shield Interactive
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
Tower Defense: Raid 51
Send troops and defend from enemies in this fast-paced tower defense game!
SpicyCatStudios
Rated 5.0 out of 5 stars
(1 total ratings)
Strategy
Play in browser
Area 51. mission: stop them all
They are planning to raid Area 51 again. Do you manage to stop them?
WTH Studios
Rated 4.0 out of 5 stars
(1 total ratings)
Strategy
Exhaust Of Earth
A Game I made in 48 hours for Ludum Dare 38
Lipsch
Rated 4.0 out of 5 stars
(1 total ratings)
Action
Play in browser
Alien creature from space!
You will be playing as Keep fallen space alien creature alive, make it bigger!
Runuchok
Rated 4.0 out of 5 stars
(1 total ratings)
Strategy
Invasion at Camp Shoomup
blast zombies and aliens
skulez
Rated 3.0 out of 5 stars
(1 total ratings)
Action
Moon Invaders
Defend the moon from invaders by building turrets, mines, and more!
Hamumu
Rated 3.0 out of 5 stars
(1 total ratings)
Action
Antons
Orbital Tower Defense Game. Save Mars from the Alien Invasion by constructing Orbital Array with units called Antons.
Bold Aesthetic Creative
Rated 2.5 out of 5 stars
(2 total ratings)
Strategy
Play in browser
DIE METAL
Tower Defence/Twin-Stick Shooter Hybrid Action!
Jenith Andrea Mercer
Rated 2.0 out of 5 stars
(1 total ratings)
Shooter
Play in browser
GIF
Planet Funk: Missile Defense
An arcade style Mission Command meets Tower Defense game...in space.
Tenacious Teal
Rated 2.0 out of 5 stars
(1 total ratings)
Shooter
Play in browser
Fly Me to the Moon
Aliens are attacking your mining outpost! Use Moonlight to power your defenses and hold them back!
Laugic
Rated 1.0 out of 5 stars
(1 total ratings)
Strategy
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