Succubus Advent: The Ethereal Collapse

by AdrihelDev

Uncensored Windows Linux Mac
Versionv0.13c
EngineRen'Py
Released2025-09-13
Updated2025-09-14
LanguageEnglish

About Succubus Advent: The Ethereal Collapse

Succubus Advent: The Ethereal Collapse is a Ren'Py adventure and RPG by AdrihelDev, featuring animated 2D and AI-assisted CG art. You play a male protagonist living a quiet life with his uncle and longtime friend on a small island separated from mainland Avalon. As an ancient evil works to return, you uncover mysteries, battle succubi and other creatures, and rely on companions who are not always helpful. The story emphasizes fantasy, monster girls, and female domination, with turn-based combat and point-and-click exploration.

Version 0.13c, released September 13, 2025, is the current build, with development ongoing for Windows, Linux, and Mac. It is in English and uncensored. The latest update fixes issues and adds content: an alternate Energy Drain ending for Selena, extra audio in that scene, a short pre-scene event and dialogue changes for Victoria, renamed to Nothing but Prey, plus visual and lighting fixes for Succubus Guard and Lilia scenes. The gallery now lets players start just before several scenes.

Developer's description

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) Spoiler 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.

Download Succubus Advent: The Ethereal Collapse v0.13c

Changelog

Update 0.13c - Fixes & content additions Selena CG related changes: Added Energy Drain alternate ending Additional audio added to original scene Victoria CG related changes: Added short event before the scene A few dialogue adjustments/additions Renamed to 'Nothing but Prey' to fit above changes Removed in game echo effect filter (Had some issues for some users) Succubus Guard CG: Fixed some energy drain visuals effects not fully looping Lilia CG Changes: Made the scene a bit brighter during the first energy draining. Gallery Changes: Added the option to start shortly before a sex scene for the following scenes: Selena's collection (Part 1 & 2) Nothing but Prey Other fixes & changes: A few small other changes/fixes. Update 0.13b - Fixes & content changes Succubus Guard CG changes: Adjusted the rig so the MC can move more and have the succubus movements be affected by it for the base animation Other small fixes to rig Added/adjusted/removed dialogue Different energy drain effects Changed/removed/added a bunch of audio Changed/removed/added some animations Added to the event leading up to the CG Other minor changes Other fixes & changes: Some grammar adjustments to 0.13 story Added missing background audio in pre/post 0.13 fight events Some other minor fixes & changes to 0.13 Update 0.13a - Fixes & small changes Selena related changes & fixes: The second CG event should now trigger correctly. Small quick edits & additions to Selena's second basement event & CG Selena not being present on the last day (during the day) of the update is now a feature instead of a bug and fixed accordingly. (Making it easier to find her second CG) Other fixes: Fixed two of the old CGs not getting archived for the build which caused a black screen on them Some audio filters not being properly reset at the end of some CGs You will now get your level increased to 5 and skills tree unlocked with two appropriate weapons added to your inventory if using Chapter Select for Chapter 2. (All changes should retroactively apply to any saves with any of the issues) 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. -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: -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

Player reviews

Player rating 5.0 / 5 · 15 ratings
Written reviews 15 · avg 4.5★
Positive (4–5★) 80%
Latest review 2026-03-26

What players say

Most players praise visuals, story, and themes, though some criticize grindy combat and text.

5★ 12
4★ 0
3★ 2
2★ 0
1★ 1

Players like

  • Engaging world-building, plot, and story pacing
  • High-quality AI art enhanced with visual effects
  • Distinct and entertaining character personalities
  • Succubus and energy drain themes handled well

Common complaints

  • Combat can feel clunky, repetitive, or grindy
  • Text-heavy dialogue can feel excessive
  • Story and main character can feel underdeveloped

Best for players who enjoy succubus themes, energy drain, and story-driven visual novels.

Summarised from 15 written player reviews.

ChurryOp 2026-03-26 ★★★★★
The execution of the game is flawless. Literally some of the best use of Ren'Py I've seen. The UI is solid as a rock, the visual effects are stunning, and the prologue alone had me amazed. And then you meet…
Fyo 2025-11-21 ★★★★★
The quality of "AI art" in this game is so good that it leads me to believe the developer must be sparing no effort in refining and editing it. Simple AI renders could never so consistently reach so high a…
passtheweed 2025-09-18 ★★★★★
This game has one of the most satisfying AI CGs, let alone CGs I've ever witnessed. The gameplay is pretty decent, and the storytelling is also pretty top notch and continues to improve as the dev works on the game…

Similar games