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 that takes place in a cult infested solar system. In this game, you can travel to different planets corrupted by cults. Your mission is to destroy opposing cults and unify the universe under the old gods! 

If you like classic shooter platformers, then this game is for you.


  • Side-scrolling platformer shooter with wall sliding and gun choice 
  • Explore distinct planets across the Cosmos. Survive in apocalyptic wastes, delve into toxic caves, infiltrate necromantic towns, and crash a castle. 
  • 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 Star System

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

The game currently features one planet called Necrorock which is home to the Flayed Cult, an undead necromantic society without skin! As an unflayed heretic, you are not safe here. This planet is covered in radioactive waste, sawblades, and flayed abominations that will skin you alive.

Support Us

This 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!
20% Off
$4.99 $3.99 USD or more

In order to download this game you must purchase it at or above the minimum price of $3.99 USD. You will get access to the following files:

Cultist Astronaut v0.20.0.zip 155 MB
CultistAstronaut v0.20.0 Mac.zip 163 MB

Download demo

Cultist Astronaut v0.20.0 Demo.zip 119 MB
Cultist Astronaut v0.20.0 Demo Mac.zip 131 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!