I was taken to a prison run by demons.

Two long term prisoners are transferred to another prison where they immediately start to notice horrifying differences from what they are used to.
Written by CIAHerpes
Link to story on Reddit
https://www.reddit.com/r/nosleep/s/kljD6ew73Q
Music by Myuu
https://soundcloud.com/myuu
Sound effects
https://freesound.org/