A downloadable game for Windows, macOS, Linux, and Android

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I'm Caribdis and I'm creating Eternum, a choice-based visual novel made in Ren'py with tons of romance, mystery, humor, and much more!



You’re moving with your best friend to the city of Kredon, home to some of the best schools and universities in the country, to continue your studies. However, in Kredon, there’s only one thing everyone talks about: ETERNUM—the virtual, hyper-reality MMORPG game released a few years ago that revolutionized the world of technology.

With a neural implant that recreates the five senses, it becomes impossible to distinguish between the game and the real world.
Thousands of servers form the network of Eternum: from colorful, magic-filled fantasy worlds to foggy sci-fi cities, no world is beyond reach.

Nevertheless, looking beyond the surface, there's a darker side to this pretty facade: black markets, torture, rape, illegal content trafficking, unlawful assemblies, data theft… Eternum follows the rules of no man.

For some reason, governments turn a blind eye to this; there’s no regulation and no control. Some say it’s because the game is highly addictive, some say it’s because the market moves millions of dollars daily, some say those in power have been bribed, and others say… there’s something else going on.

And you? What’s your role in this story?

Well... That’s up to you now.


About me

The game currently has thousands of renders and animations, but it's still in development! This means that there's still a LOT of stuff to come! Many adventures and sexy moments await you!

In the meantime, you can take a look at my other game: Once in a Lifetime, which I already completed! As Eternum, it's totally free for everyone!

If you'd like to support the development of the game, please check out my Patreon or Subscribestar pages, where you can contribute to the creation of the game while having an active role, get Exclusive Content, get updates before anyone else, and much more!

Thank you!


Updated 11 days ago
StatusIn development
PlatformsWindows, macOS, Linux, Android
Rated 4.9 out of 5 stars
(2,719 total ratings)
GenreVisual Novel
Tags3D, Adult, Comedy, Erotic, Male protagonist, Mystery, NSFW, Ren'Py, Romance


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Click download now to get access to the following files:

ETERNUM - 0.4 - PC 3 GB
ETERNUM - 0.4 - MAC 3 GB
ETERNUM - 0.4 - ANDROID (Download if the version above crashes) 1 GB
WALKTHROUGH - 0.4 314 kB

Development log


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Viewing most recent comments 1 to 40 of 2,944 · Next page · Last page

Found out about the game when I finished Once in a lifetime. The premise of the game is actually really cool, kinda gives me a little Swort Art Online vibes, if Swort Art Online was good. This whole VR Gaming schtick is a lot cooler than the good ol' reliable "reincarnation theme" a lot of creators go with, it's just a lot harder to do, because duh, 2 different worlds. Up until now, the game seems very thought through, your animations and art have obviously evolved a lot since Once in a Lifetime and I'm hooked on the game for sure. I just hope that this serious tone that the game ended with kinda maybe settles down for a bit so some more comedy can return! I literally burst out laughing when Micaela was a Dark Souls Boss when we first met her. Thanks for making this game!


Heyy Caribdis. I just want to say thank you for keep making games. I did try many games from others dev and your games is one of my fav. I just finished playing "Once in a lifetime" and I really enjoy that game. And I did see you saying you're now doing this game, so I do want to try it out and hoping it will be better. But, for most of all, I just wanna say, keep doing those games you love, and whatever you do, I (or we) just wanna say thank you for making great games always. 

Thank you for playing them!!


First off, this game is a masterpiece! Thanks a lot Caribdis!

Since I really like this game, I want to support you as much as I can. So, here is my way of supporting you: I get the following error message when I click any of the girls pictures after clicking the heart icon in the top-right corner. I'm playing on Android.


I'm sorry, but an uncaught exception occurred.

While running game code:

  File "renpy/common/00gamemenu.rpy", line 173, in <module>

  File "game/bios.rpy", line 47, in execute

  File "game/bios.rpy", line 47, in execute

  File "game/bios.rpy", line 60, in execute

  File "game/bios.rpy", line 60, in keywords

NameError: name 'BrightnessMatrix' is not defined

-- Full Traceback ------------------------------------------------------------

Full traceback:

  File "00gamemenu.rpyc", line 173, in script

  File "renpy/ast.py", line 914, in execute

  File "renpy/python.py", line 2028, in py_exec_bytecode

  File "renpy/common/00gamemenu.rpy", line 173, in <module>

  File "renpy/ui.py", line 297, in interact

  File "renpy/display/core.py", line 2702, in interact

  File "renpy/display/core.py", line 3094, in interact_core

  File "renpy/display/core.py", line 541, in visit_all

  File "renpy/display/core.py", line 541, in visit_all

  File "renpy/display/core.py", line 541, in visit_all

  File "renpy/display/core.py", line 541, in visit_all

  File "renpy/display/screen.py", line 430, in visit_all

  File "renpy/display/core.py", line 3094, in <lambda>

  File "renpy/display/screen.py", line 440, in per_interact

  File "renpy/display/screen.py", line 625, in update

  File "game/bios.rpy", line 47, in execute

  File "game/bios.rpy", line 47, in execute

  File "game/bios.rpy", line 60, in execute

  File "game/bios.rpy", line 60, in keywords

  File "<screen language>", line 62, in <module>

NameError: name 'BrightnessMatrix' is not defined


Once again, thanks a lot for such an amazing game!


And yeah, I'm aware of it, it should be fixed next update

Love the game! Just wanted to know, but do you get the rights to the music you use, or do you just wing it and hope no one tries to strike you down for it? Just asking as a fellow VN dev. Thanks!

I do own permissions, although most of them are simply copyright free

Hello can i  get discord link? Thank you.

It's closed to non-patrons until the game is publicly released, sorry about it!

do you know when you will release it for public use? I dont have the money to spend on these game

Caribdis , How do unlock the still waters scene?

(2 edits) (+1)(-1)

Be on Dalia's path and ask for something spicy for winning the bet when being in prison on ancient Rome server. And ofc support her on the powerlifting competition and go find her after.


First of all, I need to apologize to the developer, I like this game very much and support the developer for the development of this game, and I am very willing to give the developer appropriate sponsorship, but due to the particularity of my region, I can't find the right payment method in Subscribester, so I can only choose to download this game for free, I am sorry for my behavior. I have the following opinions about this game: 1. I really hope that the developers can upload this game to Steam, so that I can buy this game with pleasure. 2. Developers can develop multiple languages (e.g. Chinese Simplified) appropriately. Finally, once again I love this game.


Unfortunately, I can't publish it on Steam (licensing stuff) so I have to rely on Patreon or Subscribestar.

Recommending the game and leaving a positive review also helps! Thanks in any case!

Im new here and this may sound elementary level question. 

if I install 0.5, will my save data be automatically ported from 0.4?

Or do I start from scratch?

(1 edit) (+1)

If you play on PC, yes, all your saves will still be there after downloading the new version

On android they should too, but with Android you never know 

Thank you


The Lore, the Porn, Everything... Its a True Masterpiece!

Thank you!

(1 edit)

I found this game from playing Once in a lifetime it's a wonderful game. I like this game too but there one problem that I have is to join your discord and all the link is dead when will the link come back again? 

After the public release of Eternum 0.5 :D


This is probably the best H visual novel i have ever played. I hope we can see the next update soon cause that cliffhanger is killin me


Thank you very much!


Will you be making more projects after finishing eternum?



cant wait to play update 0.5 and then 0.6


let me ask something, if we died in the spaceship on the date with annie, how do we still have the gem of doom to go to the rockefeller dinner? aren't supposed to lose it?

You go back to retrieve, they explain it after


Hey sorry I didn't ask this sooner but do I need any special permissions to make games with HS2 or can I just jump into it?


Discord invite isn't working... It says it is either expired or not allowed...


Caribdis do you know why I cant unlock space odessey, theres no option after the texting part and i just went off to start the dinner? Anyways great game, I really enjoyed playing it! Excited for 0.5! :D


Did you ask Annie on a date? 

Download the walkthrough to see what you could have missed!


I just completed the space odessey, I think its because I rejected annie to go with me and luna to solve the crime to get the gem of doom. Thank you for your help! I checked the walkthrough! Great game btw🙂

Very good i like

Caribdis did you re:update it to 0.4 cause it seems so. I've played 0.4 when it got released initially and was excited for 0.5 and now I'm seeing the game just got updated but it's still 0.4, I'm confused to what to think I don't want to re:download the same version which I've played and the game just got updated it's showing 0.4 which I've already played. Did you do a naming error, so to which version is this? Is it the same previous version with new update or its the new version?

The public release for .5 is February 14 but it's our already for Patreon subs

okay, but what update is this cause I've already played the 0.4 when it got released initially and I'm seeing this new update here which got recently released. So I'm confused what update is this is this? is this  0.4.1 or what??

the site says updated because he made the post re: the changelog and release dates. The game itself wasn't updated

(1 edit)

Why do you think it was updated? I didn't update it 🤔

Public release it's February 14, Patreon release dates can be found in my last devlog!

(1 edit)

Bro stop making me confuse T_T. I'm gonna take this as ver 4.1 and see what is diff. 

Is there anyway to ungray a character or get to a certain point where they turned gray?


You'll have to look over the walkthrough and figure out where you messed up. Otherwise, there is no going back.

Does this game have some femdom elements?

(1 edit)

Just finished playing 0.4.

This has to be one of the BEST R18 visual novels I have ever seen,
you could get away with charging money for this game.

The story, graphics, and character designs are all brilliantly done.
I have never in my life been so immersed in playing a visual novel.

DruidCaell's comment pretty much sums up what I have to say.

Can't wait to play 0.5!

I just wish there is a “Gallery” button in the main menu.


If you didn't know, there is a gallery option. You just have to be in the game to access it, not the main menu

Thank you so much!!!
And yeah, as calbe says there is a gallery, click on the heart icon at the top-left corner (at any point of the game, doesn't matter) and you'll see it

There is a gallery function. My phone seems to be malfunctioning though. It won't let me open any of the character cards or the gallery.

Okay, I feel like I HAVE to be more verbose than in my review. This game is awesome. The chracters are really great, there's something for (almost) every taste. Their writing is not one-dimensional. The graphics are VERY good.

And on top of that, the story that's not concerned with the ladies is gripping and the feeling that every server in Eternum is different translates wunderfully into the game experience.

Can't wait for the next part to come out!

Thank you very much!!

More Spreadsheets please...

Hello there Caribdis, can i ask you something ? Can you tell me all the name of AVN on Cashier Desktop ?

(1 edit) (+1)

just finished chapter 5 and holy moly guys, this may be the the GOAT of the genre.
my mans has got it on lock!

Hey there caribdis 

When 0.4 came out the android version would crash immediately for me but you sent me a different version that somehow worked.

Do you think you could do the same for the public release of 0.5?

I'll release just 1 version this time, I hope it works for almost everyone.
Android is tricky



Hey Caribdis, I am a huge fan of both this game and "Once in a Lifetime", and I was curious as to what software you use to render the various scenes and images used throughout the game. Is it DAZ Studio?


discord not working fix this

(2 edits) (+2)

Hey, what's with the harsh command tone?

As I learned by asking nicely, Discord is closed to non-Patreons until Feb 14th (free v0.5 release date) for a wise reason, as I start to learn.


my bad wasnt meant to be harsh just that discord was working and now its not and i didnt know


Masterpiece 👍

(1 edit) (+3)

I'm from the Netherlands and this surprised the crap out of me, haha.
had such a good laugh at this.



Well, if you're interested let me know. I could... arrange something.


Played Once in a Lifetime before and I have to compliment you for the great improvements in the graphics and animations department. The lewd scenes are just awesome and there is more variety in the girl's bodytypes now, which is great. Also you nailed the character writing again, literally every girl is interesting and loveable in her own unique way.

I'm missing the goofy, memey humour of OiaL a bit, though at the same time I think the slightly toned down level is fitting the theme of Eternum quite well. I'm intrigued by the possibilities the Eternum universe has to offer for future content and can't wait for the new next release. You got me hooked. Keep up the great work.

Thank you very much!

Hi i cant get apk to install

Holy fuck, I don't know what to say! Amazing story, very great lewd scenes, just loving it! Amazing work! Keep up the working! Can't wait future updates. Take care.

I will! Thank you!


Dude, you're awesome!

Is there going to be any sex scenes with Penelope in future updates? 🥺


Of course, with all of them

I was bored when I stumbled upon this game, and my oh my am I impressed. Everything about this game is perfect from characters to the story, the 18+ content, just perfect. But ive alredy been playing for like 7 or 8 hours and I dont want it to end but I want to know how much more of this mastepiece I have remaining.

Thank you, Caribdis!


Thank you for playing!

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