A popular Japanese marketplace for VR assets where many international creators, including Mikifur, host their files.
The game places the player in the role of an observer sent into the "Backrooms" to document a creature known as a , specifically one nicknamed "Karelia." The primary objective is to survive a night shift by completing various tasks and meeting a performance quota while evading the creature's pursuit. Core Gameplay Mechanics
However, I can offer some general context: “Smiler’s Den” is often associated with fan-made content for games like Lethal Company — specifically mods or custom interiors. “v13” would suggest a version number, and “mikifur” is likely the creator’s username. If you’re looking for this file, your best bet is to check official mod repositories like Thunderstore.io or the modding communities on Discord or GitHub, while respecting the author’s terms of use and distribution rights.