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0.1.28 Full build
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Adult Themes

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Version: 0.1.28 Full build

Underneath the Labyrinth
by midsan

        (Build 0.1.28 Full build is up!) Be sure to check the changelog for more information.

       For unknown reasons. I can't edit my Changelog page. It shows a blank page instead of letting me edit the content.

       So I hosting the changelog here in the meantime.

       Changelog link: https://docs.google.com/document/d/1D1trDqvf93a8FhLC-XnvmSUiIvtrHdysdylyNKw6894/edit?usp=sharing

       Sorry for the inconvenience

      Know issue. 

        1. If player use cheat during the middle of the scene. It's could cause dialog to become stuck.

        2. In some rare case. The operating system could block some part of the game system. Resulting in game progress stuck at some point. There is a fix tho. Simply run the game as adminstator. Or switch your operating system standard user account with an admin privileges one. Shout out to xarvenius ! You're the best!

      Html hosting.

      I also host the html version of the game. Feel free to try it out. This is experimental html version of the game. So something might not working correctly. But from my testing it seem working fine. Even the save feature seem to be intact. It's take quite a while to load first time you run it. But it should save in your browser cache. The second time will be much faster. (When updating. Be sure to clear browser cache. This force your browser to download the new build. Instead of using existing file in browser cache which is an old build.)

       Underneath the labyrinth is an free erotic adventure game. Heavily inspire by cthulhu mythos.Much like The Allure of Wanton Cove by the aftermath team. (Anyone didn't play that should give it a try!)

The game feature the rich world deep with it history, lore and conflict. As well as mystery for player to uncover.
       Player play as veteran knight with a dark past. Investigating the strange phenomenon and the missing of his friend. It's up for the player to find out what really did happen in this strange event. While hopefully didn't get corrupt and tranform into lusty sex crazed nymph.
               Currently the game have.
       -Characters npc with backstory. Motivation, Secret, Lots of them plan to be romanceable and muntiple ending depending on your success in your quest, Who you romance with,etc. You can talk ask them question that will fill you up on the game lore and what going on in the current event. Build relationship with them. Some of them is more well developed than most and serve as a prime example on how sex scene work.
       -A turn base combat with animation display system that emphasis on player awareness and risk management.

  -A light rpg elements with item, weapon/armor upgrade. As well as skill perk system and stat allocation. There're also ingame map near gear and tool section. If you point mouse to any location it will display information about the place. It's give info on the lore of the world that these character exist. Immersion!

      -A deep character display system where the game can show the effect of corruption on main character body and sex. As well as what armor he/she equip on. Currently the game also have corruption system and have 8 stage of tranformation. From a vigilant knight to sex crazed servant of the old one.
      -An atmosphere sound to help build the mood. One could call this as erotic horror game. No jump scare. Just a sense of dread and the threat of losing your in game character manhood.
      -Colorful image both rendered and draw and a simple display system to show who you walking to and where you are. Just in case text description is not enough.

       Here some of the image. (Currently the game still went through image quality optimization. Resulting even more sharper and better lighting.)


      -An npc awarness where they react to your corruption stage. The sex scene also dynamicly adjust .
      At the moment (3/7/2021) the game is stable. Have a grammar issue here and there. Content and bug fix consistently update weekly. Now after v.0.1.4 with story element update with boss. I felt it time for throughout proofreading to fix the grammar and text missing issue.

   The game will be free for anyone to enjoy. But if anyone interested to supporting me in my endeavor and want to keep this project alive. Please check out my patreon page.


   I also host a discord server. Allowing anyone to theories, chat, Report a bug, Or just message me to work my ass off and release the next build.

   Discord link : https://discord.gg/ZnJYdjT8dS

   I also would like to express my gratitude to this site. For years i been playing lots of great game this site has to offer. Thank you for such a joy ride over the years.

   I also leave a cheat here since i doubt anyone want to grind in an unfinished game fighting the same type of enemy. and i value your time. So here it is.

- Numpad 8 or 8 Add progression when pc travels in labyrinth. 

- Numpad 9 or 9 Instantly wins the fight.

- Numpad 2 or 2 Restock item and heal HP/SPIRIT

             Player could find more cheat in the tavern. After player rend the room from mercer[Barkeeper]

Thank you for your time! And thank you for anyone that supporting me on patreon! Your generosity will keep me fed and help me support my fammily. And thus i'm very grateful.

A veteran knight searching for his battle brothers found himself in a small remote mining town with a strange phenomenon. A calling that prying on his desire, Sense of duty, Take advantage in a moment of weakness. Would he succeed in his quest? Or found himself tranform and fell to the alluring corruption.

Player character : Veteran knight of the order with a dark past. Player can choose starting skill, Thier own character motive and desire. This option help differentiate each playthrough as the corruption will have slight different dialog scene. For example Character with lust for power character background will be persuaded by offer of power.

Young Lad (Adam)(romancable) : A waiter in a barmaid tavern. He is shy and halfway through a tranformation. He also serves as example how event with character work. See in walkthrough for more info. And stay tuned as it not the end of her romance path yet.

Mercer : Father of adam. Imply to be loving caring father but after the unfortunate incident found himself constantly wrestle with his inner demon and desire. Offer room for rent. Or get it for free by offer your body in a future update.

Sir Grey(plan to be romancable) : A reknowed knight of the westfort turn into an alcoholic drunkard after the unfortunate incident he refuse to talk about. He serve as your info man. You can learn a lots about labyrinth and the world lore. Just don't mind his manner.

Denethor(plan to be romancable) : A hard working blacksmith with goal to perfect his craft anyway possible no matter what the cost. Found himself turn into a woman after exposure to the labyrinth influence. Offer weapon and armor upgrade. (Fun fact. Repeating request upgrade without actually having enough coin lead to funny scene. )

Catherine (plan to be romancable) : A mysterious priestess of the forgotten one church. Offer more lore about the world history. And conspiracy theories. Give helpful and can cleansed small portion of corruption once a day.

Captain (plan to be romancable) : A pirate respectable merchant in the captain good shop. Offer gaget and consumable shop service. Appear to be very easy going and offer lots of stories to pass the time. A colorful character in contrast to the dread you felt everywhere else

Veronica : A mysteriouswitch living outside of the labyrinth. Offer a mysterious potion with a secret trade off. She currently researching the effect of the corruption and looking to find a way to turn herself young again.

More to come!

    I'm now start making Comprehensive walkthrough and game guide. Which can be access on the link down below.

          Link : https://docs.google.com/document/d/1F7pkEIzKgtyz80FIspGNbqbAJaguSpJaxLEt_lc2qxA/edit?usp=sharing



0.1.11 Full build

        New content.

  1. Add player character visual when he/she sleeping in the tavern. It's also display he/she feeling when waking up. I want to explore player character and feeling. Yes,Player can navigate to player visual display and get a feel for the character of the current corruption stage but I feel it should explore it in a more in organic way. So here it is. Support all player form.

 2.  Add a bathrom in the tavern. Allow player character to relieve themself. It's also a fun for exploring character. How she would react after recently turning into a girl and have to take a piss. etc. It's a trope of tg genre. So i apologize for the low haning fruit idea. Support all player form.

 3.  I actually forgot to add link to the early build to my patreon post. I was so busy i even forgot about add the link after update changelog. So feel free to check out the early build content down in the change log.


 1.  Fix the futa masterbation scene stuck.

 2.  Fix a bug that cause pc to unable to do normal attack. After getting bash attack [The one where enemy shoulder slam you. Or kick]. If the stuck problem still persist let me know.

 3.  Fix a sleep event not progress for full corrupted pc.


0.1.11 Early build

       New content

1. Finish the alternate route in Grey Quest. This route force tg on the player. While the previous route Grey is the one that got turned into a girl. Basically, either one of you is going to be a girl. Based on player choice.

2. As Pc is the one getting TF/TG in this route. Feel free to try out the pc on different corruption stages. If pc is male. She will turn into corruption stage 3 and have a more shy demeanor and reaction to the whole thing. If pc is already female. She basically gets a +1 corruption stage unless she is already at 6. Her reaction will be more lustful and welcoming to the change the more corruption she ended up in this scene.


0.1.10 Full build

        New content

  1. Add npc relationship menu support for sir grey when he turns into a female.

  2. Player now has an option to hunt on a lone adventurer in a corrupt route.[Corruption stage 8] 

She has different fighting behavior, 2 hit power attack but can't break player defensive stance on hit. And she has a new tired mechanic that allows the player to exploit her weakened defense when she tired. 

 3. New area in town. The secluded area. It serves as an alternate path way to the town graveyard. And serve as a hide-out for corrupted playthrough. The player can convert fallen adventurers they kidnap here. Also, new tf/corruption when converting the new enemy. The Player required to be pregnant with shadow spawn to convert another. 

 4. When you convert around 2 people. You can interact with the new member of the sisterhood in a trade district.


Latest Reviews - View All Reviews

Review by aloopy

Version reviewed: 0.1.18 Early build on 10/31/2021

This is an interesting project. Maybe when it is further developed it will be quite propular.


  • Not grinding in the usual ways like so many tfgames - instead you have RPG-style progression.
  • The combat is quite good. Complicated enough, but not too much.
  • Combat is an important part of the game - central to it - which makes the "grind" not boring.
  • The graphics (seem to be from Skyrim) and work pretty well, with many scenes and transformation stages.
  • Overall, well illustrated, with appropriate images.
  • Original game concept where you can resist or play the dark side.
  • Not a railroad where there's nothing to do but get into trouble so you transform.
  • Some good transformations.
  • Being corrupted is quite fun.
  • There seem to be plans for a strategic component where you have to corrupt or save the continent.
  • Characters are distinctive and easy to remember.



  • The dialog and text is obviously not from a native English speaker, and it can be quite intrusive.
  • Some plot threads go nowhere.
  • A lot is unfinished, with obvious hooks into parts of the game that don't exist in many places.
  • The interaction with the UI elements is unreliable and indistinct. You can't get a good sense if a click was recognized.
  • Strangely slow and unresponsive in some cases, despite very powerful computer.
  • The game has a very narrow view of gender roles.
  • Being corrupted is very unfinished and quite broken still.
  • I would like arousal or corruption to have more impact on the MC's options in conversation.
  • Needs another way to regain willpower during adventures - using a consumable.
  • There should be more ways to get loot without searching.


The biggest issues are definitely the writing - which can be hard to understand, or just doesn't read well - and the poor UI experience.

The UI is most annoying in combat, but the sense of uncertainty about whether a click did anything, and whether the game is stuck or being slow spoils the experience quite a lot. If this can be fixed it will be much nicer to play.

I think the author needs to team up with a good writer who is a native speaker if they want to make a good game in English. Perhaps in the author's native language it is better.


The Skyrim graphics used look they were rendered with very low settings and are not up the expectations of Skyrim screen-archers. The author should probably re-do them with a high-end ENB in place.


If the author can do more of the more strategic part that seems to be planned, with different towns, cities, etc. it will become a lot more than a simple RPG with only one dungeon; that would be great to see.

I think there's a lot of potential here, but currently it doesn't take long to see most of the content.

Review by Fantasist

Version reviewed: 0.1.17 Early Build on 10/14/2021

The transformation art is very well done! Excellent pacing.  I would enjoy seeing a fork where the main character completes the transformation into their future self and enjoys more sexy times.

Review by prettystupid

Version reviewed: 0.1.15 FullBuild on 09/04/2021

Overall, a fun game with great atmosphere and a nice transformation.


Graphicallly, it's good, not the greatest, but it looks nice and the images serve their purpose. The game has good atmosphere and an interesting plot so far, though there's not much plot progression yet. Despite that, there are a good couple hours of gameplay. The combat is functional, but not too challenging, and doesn't wear itself out. It does a good job of forcing you to manage your resources as you progress through the labyrinth.


There are some grammatical errors, but they're minor enough that you can generally ignore them. The overall structure of the writing is fine, and each character manages to have a distinctive voice, so it's easy to read. The biggest gripe I have is that the game is a bit slow to respond to input.


This is already a fun experience with some well done corruption and transformation, and it's a solid foundation for what could be an excellent game as the story progresses.

Review by JNBackup

Version reviewed: 0.1.12 Early build on 06/27/2021

great game for many reasons, and there's still plenty of room for this game to become better!
i could say much more, but i assure you that the vibes this game gives are amazing.

My only feedback to the dev is that Timers, or transisions from page to page should either be fast, or show a "please wait" even if its only 5 seconds, im mainly talking about going into combat, etc.

Review by GameOn

Version reviewed: 0.1.11 Early Build on 06/13/2021

Agree with UI bug fixes being the most important thing at this point. Just got stuck in a fight unable to click on anything. Pretty good game otherwise.

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