Succubus Advent: The Ethereal Collapse [v0.13] [AdrihelDev]

You live a mundane life with your uncle and life long friend, on an island with few inhabitants, secluded from the mainland of Avalon. Little do you know, an ancient evil is planning it’s return. You’ll discover new hardships, reveal mysteries, fight Succubi and other creatures, interact with your (not always) helpful companions, and seek an end to this great threat.
(The game has NSFW CGs leading to the main characters death and subsequent game over)

The game is a story driven game with a mix of RPG elements such as turn-based combat, with a focus on Femdom Succubi and events such as Energy Drain leading to game overs.

Thread Updated: 2025-07-01

Release Date: 2025-06-30

Developer: AdrihelDev – Twitter – Patreon – Discord

Censored: No

Version: 0.13

OS: Windows, Linux, Mac

Language: English

Genre:

AI CG, 2DCG, Animated, Fantasy, Point & Click, Turn Based Combat, RPG, Monster Girl, Male Protagonist, Energy Drain, Femdom, Reverse Rape, Cowgirl, Vaginal Sex, Anal Sex, Tail Sex, Titfuck

Installation:

1. Extract and run.

Changelog:

Update 0.13

-A continued main story

-3 new CGs

-Some minor changes to previous CGs.

0.12d1 update notes
–Fixes:

-Various grammar fixes across all chapters (Special thanks to Flying Mage!).

-Added missing Lilia expressions for the dialogue that happens when she gets removed from the player’s room by Aziela.

-When triggering the Aziela event ‘Harmless Snack’, it should no longer load the wrong room if Lilia was sleeping in your bed.*

*The fix should apply to all saves at any point but if it’s after the event, you’ll just miss a small bit of dialogue with Lilia if she was kicked out the room.

–Other:

-Some minor unnoteworthy changes.

0.12d update notes
–Content:

-Added NSFW CG ‘Harmless Meal’ (Titfuck)

-Added questions/conversations to Aziela while in the Shadow Conclave.

–Small changes/additions:

-Minor dialogue changes/fixes

-Added relevant discord links

-Various movement/expression/changes/addition to Lilia during story dialogue

–Fixes:

-Bellatrix CG will now unlock correctly for the gallery, instead of always doing so.

-Skipping should no longer unintentionally be disabled in certain circumstances when loading a save.

-map/storage room nav UI should now be removed correctly when using rollback

-Fixed UI elements not being removed when using roll back in some conversations (on going)

0.12c1 update notes

–Content:

-Quick story alterations so there’s a route that the MC can avoid the ‘Breathless Understanding’ Scene**

-Dialogue/scene changes to ‘Breathless Understanding’ due to above story changes.

0.12c update notes
–Content:

-Added NSFW CG ‘Breathless Understanding’ (Facesitting Passout)

-Story up to ‘Breathless Understanding’ NSFW CG

–Small changes/additions:

-Added the magic sound effect to Aziela when she uses magic in 0.12 content

-Added different Succcubi Guards name locations to better represent who’s talking.

-Added background ambience to post crystal cave, caves.

–Fixes:

-Fixed post cave nightmare sounds not ending when it should.

-The screen should no longer stay black in the second cave scene when certain inspect points were the last to be picked.

-Fixed newly added character text colors sometimes not changing with preference settings

-Fixed navigation UI not being removed when using rollback in the following: Hallowspire town center, road to Hallowspire, Shadow Conclave player room, some Lilia dialogue, some Aziela dialogue.

-Some grammar fixes in ch1 and ch2

-NSFW CG ‘Reminiscence’ should unlock in the gallery when viewing the scene.

–Other:

-Minor unnoteworthy changes

0.12b update notes

(WIP Pre-Release)
–Content Changes:

-Changes to NSFW CG ‘Reminiscence’ (Nyx Tail CG):

Significant dialogue changes/additions
Added Camera movements/effects
Added audio filters
Reduced the ending fadeout time

–QOL:

-Added Chapter 2 to chapter Select.

-Added the NSFW spoiler system to new scene

-Player Affinity colors added to choices they were missing (Ch1 Rorath Peak & Lilia pre combat choice)

–Fixes:

-Fixed Lilia pre combat choice not giving Affinity in Ch 1

-Separated the audio in the post nightmare cave scene and made it loop better

-nyx should now be Nyx

-Updated Ren’Py 8.3.3 -> 8.3.4*

*There was a bug where audio under certain circumstances would not stop playing from a video file, even when the video itself was not playing. Updating the engine seems to have fixed this as far as I can tell, hopefully not causing any new issues in the process, but I’ve not noticed any when running through the game when testing things.

–Other:

-Updated the disclaimer warning to be more clear

-WIP Pre-Release icon on main menu*

*Just so those who find the game not on Patreon can see it’s an earlier than usual build and can choose to wait for a more completed update.

-Some very small un-noteworthy changes

-Balance Changes*:

*I’ve made these quick changes to further reduce the grind and time spent significantly as a temporary fix, and I plan to rework and expand this early part of the game at some point to something that works better.

Enemies:

-First Cutthroat Bandit

HP 12 -> 7
Dodge 10% -> 0%

-Cutthroat Bandits:

HP 25 -> 15
Dodge 10% -> 0%

-Grey Wolf:

HP reduced 8 -> 5
Dodge 5% -> 0%

Weapons:

-Splinter (Starting weapon):

Accuracy 90% -> 100%

-Quickstream:

Price 300 -> 150

-Heavy Bow:

Price 800 -> 350

-The Warsong:

Price 1200 -> 800

0.12a Update notes:
(WIP Pre-release)

-Story Content until the first main CG
-New NSFW CG Cowgirl Tail Drain
Version 0.113
Emergency Fix update

– Hopefully fixed an issue with the cutthroat name variable

Version 0.112
Fixes & feedback changes update
–Changes and addition to ‘Little Devil’ NSFW Scene:

– Fixed the layers misalignment issue

– Added a choice leading to two slightly different endings

– Added extra CG for one of the endings

– Lighting changes

– Dialogue changes

– Fixed/added transitions from loops 3/5 and back

–QOL additions:

-NSFW Spoiler setting added to Preferences and can now be changed at any time

-Enabled rollback everywhere except combat & ventures (Use via quick menu or scroll wheel)

-Added a hide dialogue option to quick menu

–Balance changes:

– Increased XP gain when killing enemies

– Reduced The Den’s weapon costs

– Increased The Den’s lower level weapon damage

–Other Fixes:

– General dialogue fixes/changes throughout

– Fixed Theron’s name not updating after meeting him

– Fixed EXP to next level not increasing when you beat Irving and it auto levels you to 5 if not already at level 5

– Combat enemies unintended fading fixed

Version 0.111
Fixes & minor changes update

– Lilia minor character asset changes and minor dialogue changes/fixes.

Version 0.110

Content Update

– Short Story Content introducing a new Succubus.

– New NSFW CG (Little Devil).

– Added the first iteration of text color presets in preferences.

– Minor bug fixes and dialogue changes.

Version 0.101
Content Update

– First part of the Mainland story.

– New NSFW CG (Alone on Rorath Peak)

– Chapter Select.

– Gallery with unlock all option.

– Cheats in preferences for those wishing to progress faster.

– Several fixes to prologue dialogue

Version P003 (Prologue)
Initial Release

Developer Notes:

AI art is used in the game, I understand it’s not to everyone’s liking. I’d love to use actual artists but due to it just being a hobby and especially my limited budget constraints (My lacking art skills also doesn’t help) it’s used for now.

This is a project I’m continually working on in my spare time (Mostly Weekends) for fun, as such the game is and always will be FREE for ALL updates. It will be updated as I finished each part (Short Prologue first then parts of each chapter), I can only hope you get some entertainment out of it as I get creating it.

Feedback is greatly appreciated and welcome, as I’m always happy to take it into consideration and keep improving future and existing content.