Quick Search:

Game Information
Release Date
Last Update
Orig PC Gender
Adult Themes
TF Themes

Play Online

Warning: This is hosted outside of TFGS and we cannot confirm it's safety or track how many times it has been played. Proceed at your own risk.

Version: 0.7.0

Version: 0.6.0

Version: 0.5.0

Version: 0.4.0

Version: 0.3.0

Version: 0.2.0

Version: 0.1.0

TS Ero Trap Dungeon
by espeon

TS Ero Trap Dungeon


You have been defeated by the Demon Lord, magically transformed into a young girl, and dropped into the obscene underground labyrinth he built for fun. Whether you are able to break through and challenge the Demon Lord again or succumb to the dungeon and become his toy is up to the choices you make.

Writing: Mizuki Nanase (Pixiv)

Cover: Souzuki Naru (Pixiv)


Translation Notes

TS Ero Trap Dungeon is a translation of a light novel series intended to be played as a game book, hence the section numbers, references to pages, and visible internals. We have formatted it into a Twine game. Please enjoy!

Book Preview (Pixiv)

Please follow updates and leave a review here on TFGamesSite.

The current content covers only up to Floor 7 of 10 (completing Book 1 of 3). Please purchase the original book if you can, and consider joining the translation crowdfunding effort at gender.tf (and see WIP builds) to help with this project and see preview builds.

Purchase Book 1 (Toranoana)

Purchase Book 2 (Toranoana)

Purchase Book 3 (Toranoana)

Translated by Jumi (JumpKain#4046, [email protected])

Commissioned and organized by espeon (gender.tf, discord.gender.tf)



You are a hero chosen by the spirits of light.

Having received blessing from the spirits of light, you gathered allies while traveling the vast world, sometimes helping the populace, and occasionally foiling the Demon Lord’s plans.

You challenged the Demon Lord with the experience you had accrued.

However, he was stronger than you had imagined, and even using all of your power and even the trump card you’d prepared in advance, you weren’t able to beat him.

Currently, you and your party are battling the Demon Lord, and are on the brink of defeat.

"Kukuku, your trump card, the magic of the light spirits, was too weak. Your recovery-magic using Priest and your offensive magic-using Magician have also been defeated, and all that’s left is you,

Hero, and the one-armed, shield-bearing Knight. Your situation is the very definition of despair, no? You have no options left anymore, do you?"

You’ve lost your trump card, your allies have been injured, and you can’t fight any longer.

"So, what will you do, Hero?"

You face the Demon Lord standing in your way...


1. "I’ll stand up to defeat you no matter how many times it takes!"
2. "Just kill us already..."
3. Silently grip your sword again and attack one last time.

【BAD END 1 / Decapitated】

【BAD END 2 / Absorbed by a slime and turned into the Demon Lord’s servant.】

【BAD END 3 / From a seedbed princess to the Demon Lady who oversees the age of chaos.】

【BAD END 4 / The Demon Lady's Pet Maid.】

【BAD END 5 / A slice of history, "The Birth of the Demonic Holy Maiden."】

【BAD END 6 / A slice of history, "The High Succubus that Defeated the Demon Lord."】

【BAD END 7 / The lewd Sex Slave Gladiator of the arena."】

【BAD END 8 / The relationship you wanted, but as succubi...】

【BAD END 9 / An incubus's living sex toy.】

【BAD END 10 / You're in debt, dona, dona, do~na~, do~na~】

【BAD END 11 / The beginning of the number one "Queen of the Night" among succubi.】

【BAD END 12 / The "night establishment" where two beatiful succubus sisters are said to perform.】

【BAD END 13 / The birth of the eternally-wandering "Walking Calamity."】

【BAD END 14 / Made into a seedbed for tentacles...】

... and more to come




  • Added floor 7.


  • Added floor 6.


  • Added floor 5, starting Book 2.


  • Added floor 4.
  • Added keybinds.


  • Added floor 3.


  • Added floor 2.


  • Added floor 1.

Latest Reviews - View All Reviews

Review by Echidna27

Version reviewed: 0.4.0 on 10/06/2020

Quality writing and fun interactions, it makes it quite easy to understand what has happened if you decide to do multiple playthrough thanks to its classic adventure book tick list on the side pannel.

Once this games content expends it will have so much replayablity, unlocking the different dialogs and paths based on effects and previously triggered events.

Review by tedruge

Version reviewed: 0.1.0 on 03/24/2020

I was surprised by how much I enjoyed it. I was uncertain if I should try it out and glad I did. Feels very much like a choose your own adventure with a bunch a variables that can effect future choices. Yes, over all there is one path to go down, but in a Dungeon there always is.

Review by TyrantTraitor

Version reviewed: 0.1.0 on 03/12/2020

I really love this game. The writing, the concept, and the kinks shown so far. It's right up my alley. 


However... It is so damn short! I'm fairly sure that I've run through every option in maybe 20 min. Please, keep working on it!

Review by FrozenWave

Version reviewed: 0.1.0 on 03/12/2020

Don't listen to TreebeardTheEnt's review. It's clear they had no interest in playing beyond two clicks anyway. The actual game only starts after choosing the 'correct' option at the start.


The immediate bad end at the beginning makes sense too. You're up against a demon who proves to be much, much more powerful than your enitre party combined. Then, the only way you survive is because this very powerful demon is amused by your defiance, and chooses to transform you instead.


Great concept and start. I'm very much looking forward to future updates.

Review by Melongirl3

Version reviewed: 0.1.0 on 03/12/2020

Awesome concept! I am lovin' it ^-^

Total Games: 1,727
Total Contests: 32
Total Reviews: 16,503
Total Engines: 33
Total Adult Themes: 10
Total Transformation Themes: 26
Total Multimedia Themes: 9
Total Online Plays: 3,029,186

Support TFGS!