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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 our demo into a solid platformer, shoot-em-up.

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

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


Download NowName your own price

Click download now to get access to the following files:

Cultist Astronaut v0.18.0.zip 132 MB

Development log


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i like the game (cool thing at fan fusion btw)happy grunt from madness combat (@gruntfrommadnes) / Twitter


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

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