A downloadable game for Windows and macOS

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Travel Across the Cosmos and Obliterate Cultic Factions

Cultist Astronaut is a 2D action adventure in a cult infested universe. Travel planet to planet, explore corrupted civilizations, and fight back against cults and their champions. The mission is to unify the universe under your cult for the doom god!

You can join our Discord and chat with the devs and community:

Game Features

  • Side-scrolling platformer shooter with wall sliding and gun choice
  • Tackle the cults in any order you choose!
  • Explore distinct planets across the Cosmos. Survive in apocalyptic wastes, delve into toxic caves, infiltrate necromantic towns, and crash a castle.
  • Absorb the souls of your enemies and power up your gameplay difficulty.
  • Unlock new weapons by defeating Cult leaders.
  • Challenge yourself to get a new highscore or beat the game at the highest soul level.

Explore a Bizarre Star System

The planets of Cultist Astronaut consist of ominous cults, twisted abominations, and hazardous locations to tackle.

Excoria, once a simple mining outpost, became the foundation of the Flayed Cult. As miners unearthed a statue of a skinless deity, they were struck with the Rockskin disease, turning their skin to stone. In their search for relief, they found that shedding their hardened skin brought momentary respite and spiritual clarity. Thus, the Flayed Cult was born, centered around this act of purification. Led by the Flayed King, they believe in a prophecy: the return of the Great Skinless One who will cleanse the galaxy. Their rituals are intense, and their faith, unwavering.

You can also visit Sludge Haven, the home of the Imposters, where you fight Nobodies, Somebodies, Anybody, and Everybody. This place is infested with worm-like aliens who have lost all sense of self. To fill this void, they started mimicking the personalities and lifestyles of others, which eventually consumed them and caused the downfall of their society. They even scavenge for junk and corpses to further their identities! 

Support Us

Cultist Astronaut is currently in Alpha. We are refining the game into a solid platformer, shoot-em-up. You can try out our free demo or purchase the game at an early access discount.

If you wish to support us, you can also follow us here: 

Music by Teknoaxe: www.teknoaxe.com/Home.php


Buy Now
On Sale!
25% Off
$7.99 $5.99 USD or more

In order to download this game you must purchase it at or above the minimum price of $5.99 USD. You will get access to the following files:

Cultist Astronaut v0.30.12.zip 194 MB
Cultist Astronaut v.0.30.12 Mac.zip 208 MB

Download demo

Cultist Astronaut v0.30.12 Demo.zip 168 MB
Cultist Astronaut v.0.30.12 Demo Mac.zip 182 MB

Development log


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Thanks! We had a lot of fun at Fan Fusion :)

I love the art, the controls are nice, and the music choice is good!