Underdark: Prisoner Monster Girl Isekai

DESCRIPTION: During an expedition, a young archaeologist accidentally falls through an ancient portal into a completely alien and dangerous underground world.
Unarmed, friendless, and with no idea how to return home, he finds himself in a cruel reality where people are a rare and valuable commodity.
Now he must survive in a dark fantasy world inhabited by demons, ancient magic, and creatures that stare at him with hungry interest.
Gradually, the protagonist begins to realize that there may be no way back... and that this world is slowly but surely changing him.

Last updated: March 26, 2026
Released: March 25, 2026
Genre: 3DCG, Animation, Male Protagonist, Mobile Game, Anal Sex, Female Domination, Futa/Shemale, Bondage, Vaginal Sex, Adventure, Fantasy, Monster Girl
Creator (Developer): luentheri
Censored: No
Version: 0.01
OS: Windows, Linux, Mac, Android
Language: English
Size: 3,14 Gb

System Requirements:
Operating System: Windows 10
Processor: Core i5-7300U 3.5 GHz
RAM: 4 GB
Video Card: NVIDIA GeForce GTX 660
DirectX: Version 112
Free Disk Space: 3,14 Gb
Sound Card: Compatible with operating system