A downloadable game for Windows and Linux


Content Warning - 18+ Only. Horrific, disturbing monsters. Pixelated genitalia. Spooky.

What is this place...? Who are you? Who am I?

A Networked Horror Co-Op game (for 2-players). Explore the deepest recesses of your mind to put yourself back together. Defend yourself from its denizens.

There is a meaning to this realm of madness, though it may take multiple play-throughs to understand. We'd love to hear your take on it via the comments!

- Credits -
Tyler T - Code Pervert
Ryan L - Spookier Programmer
Eric G -  Fear Fabricator
Chris M - Sound Dude
Summer T - Genital Consultant (baddie art)

Made for the Hexcode Showdown 2 Gamejam. The theme was "Dream" and the color palette we used.

- Installation -

  1. Grab a friend
  2. Download
  3. Un-Zip
  4. Launch Steam (how we do multiplayer, it just needs to run in the background)
  5. Launch the game from the unzipped folder ("Eronoctosis")
  6. 1 player host
  7. 2nd player join with roomcode
  8. Have fun! Get spooked!

Seriously! Go play the Steam version! It's way better and FREE!

PlatformsWindows, Linux
Rated 4.6 out of 5 stars
(13 total ratings)
AuthorsTyler Tomaseski, GreenF0x, Summer T
Made withUnity
Tags3D, Adult, Anime, Co-op, First-Person, Ghosts, Horror, Multiplayer, Multiple Endings, Survival Horror
Average sessionAbout a half-hour
InputsKeyboard, Mouse
MultiplayerAd-hoc networked multiplayer


Eronoctosis Windows 33 MB
Eronoctosis Linux 36 MB

Development log


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Android version

nice game

is there a 32bit ver

Me and a buddy tried to speedrun this game, kept asking the devs to allow an official run, it worked!

Hey! I went and looked at the Steam version, but it appears that there’s no Linux version there. Will you add a Linux version to the steam release? (Especially curious if there’s any difference in gameplay and whatnot.)


un juego corto pero muy atrayente, lleno de criaturas que simplemente son únicas e interesantes y un apartado artístico muy pulido con colores diferentes.

Is there a difference between the Steam version and this one?

I live in Germany and the Steam store page for this game is blocked for me.

There are significant differences. I'll look into why it's blocked in Germany. If your account is 18+ it should be able to see it.

Germany has some legislation in place that makes Steam auto-block adult games on it.

So, unfortunately I won't be able to use the Steam version.

This comment has been translated using a translation tool.

 I played this game. Thank you for the wonderful game. Especially the enemy design was cool. 

Is there one good ending?

 I would love to play it again if there is additional content.

 The game was played live in the following video. Thank you very much.

I'm glad you enjoyed it! The new version on Steam has a better ending. And keep an eye on additional updates!


Uses the DeepL translation

I played this game with shirocory.

We thought it was awesome two-player cooperative horror game.

I believe that if the game is completed at this rate and gains more recognition, it will become popular in the Japanese gaming community.

Thank you for a very fun game.

I'm looking forward to seeing your progress.

(1 edit) (+1)

It was a wonderfully fun two-player horror game!

There was a pitch-black space, will anything be added in the future? When holding the flashlight, I found it easier to see if I didn't zoom in.

Thank you for a fun game.

I'm excited to watch! Thank you for sharing!!!

(1 edit)

Ahhhh You guys did so great! どうもありがとうございます !!