MORSOMNIA:0 - Caretaker of the Unknown in a Surreal Sci-Fi Adventure

8/4/2026, 12:44:13 PM

Release date: 1/30/2025

Tags: #atmospheric #cute #psychological-horror #sci-fi #surreal #adventure #singleplayer #free-to-play

User Reviews

Score: 100%Very Positive
Review Count: 65 reviews
Fetched At: 8/30/2026, 12:56:45 AM

Reference prices

Japan

Free to Play (JPY)

Steam JP

Free to Play (USD)

Steam

Live Store Snapshot

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Japan Price: Free to Play
Global Price: Free to Play
Sale Status: Regular pricing
Price Checked At: 8/4/2026, 12:44:11 PM

The price snapshot and review snapshot differ by about 612 hours. Because they are not always refreshed at the same time, confirm the latest Steam listing before making a purchase decision.

Key highlight

MORSOMNIA:0 is a free-to-play, single-player atmospheric adventure where you play as a caretaker for an unknown life form. Progress through a surreal sci-fi narrative driven by text and interaction, exploring an institut

Who this is for

Recommended for players who want to immerse themselves in a unique world and narrative. While it contains horror elements, it's more suited for those who prioritize a mysterious experience over pure fright.

Details

Overview

MORSOMNIA:0 invites players into a peculiar and atmospheric adventure where the core gameplay revolves around the duties of a caretaker for an enigmatic life form known as "Kuon." This free-to-play title, developed and published by 沐沐睡星, offers a unique narrative experience focused on interaction and story progression through text. Players step into the role of "Kaiyou," tasked with looking after Kuon, an isolated entity residing underground.

The game eschews complex mechanics, opting instead for a story-driven approach where reading dialogue is key to advancing the plot. Beyond the primary caretaker role, players can explore the institute, visit a cafeteria for a quick meal, and interact with the staff.

These interactions might lead to unexpected exchanges or even mysterious gifts. The freedom to manage tasks, take breaks, or simply explore the institute is a central theme, all while the overarching narrative hints at Kuon's eventual, transformative influence on Kaiyou's fate.

Highlights

Atmospheric Sci-Fi Adventure: Immerse yourself in a surreal world with a focus on psychological horror elements and a unique, cute aesthetic.
Narrative-Driven Gameplay: Progress through the story primarily by reading text and interacting with the environment and characters, making it an accessible yet engaging experience.
Free-to-Play Experience: Enjoy this single-player adventure without initial cost, offering a unique caretaker simulation with a compelling narrative.

Who It's For

MORSOMNIA:0 is suited for players who enjoy atmospheric games with a strong narrative focus, psychological horror elements, and surreal or cute aesthetics. Those looking for a less mechanically intensive, story-first experience will find themselves drawn into the mystery of Kuon and the institute.

Game Info

Developer: 沐沐睡星
Publisher: 沐沐睡星
Genre: Adventure, Free To Play
Release Date: January 30, 2025
Platform: PC (Steam)
Mode: Single-player
Content Notes: Features unsettling elements such as hyperventilation, panic, flashing screens, depiction of suicide, and expressions of violence.