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MORSOMNIA:0
Interacting with the unidentified life form “Kuon”, we move forward with the pain. A surreal, mysterious fancy adventure.
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-27.
“Absolutely beautiful piece of art and truly meaningful. BTW other reviews are wrong or outdated. There is a CG gallery.”
— a player, Steam review · 6 hrs played“beautiful game. would love to know much more about the universe”
— a player, Steam review · 6 hrs played“大好きな青に満たされたゲーム。 穏やかな時間が流れていくのに、散りばめられた謎に引き込まれる物語でした。 いつもはエンディング回収などは特に気にしないのですが、 このゲームに関してはすべて知りたい…というか、 何度でもプレイしたいなと思いました。”
— a player, Steam review · 3 hrs playedLatest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
【MORSOMNIA:0】 Goods & Art Book Online Sales Announcement & Year-End Greetings
Hello everyone, and long time no see! As mentioned in the title, we are pleased to announce the online sales of MORSOMNIA:0 goods and art book. ● Art Book (A4 / 74 pages) This book compiles character
MORSOMNIA:0 Half-anniversary
It's been a while, but MORSOMNIA:0 celebrated its six-month anniversary on July 30! We are overwhelmed with gratitude to everyone who has played the game! To commemorate this milestone, we drew a pict
[Patch Note] Bug in which the Japanese version cannot be selected
Due to a misconfiguration when uploading the Korean version, there was a temporary issue where Japanese could not be selected. This issue has now been fixed, and Japanese is available again as expecte
MORSOMNIA:0 Announcement of Korean version implementation
MORSOMNIA:0(모르솜니아: 제로) Announcement of Korean version implementation Hello everyone! We have implemented the Korean version in today's update. Mr. 솜 was in charge of the translation. Thank you. X:@Cor
【MORSOMNIA:0】3/19 ver1.2.3 更新+α
みなさんこんにちは！ 3/19にアップデートを行いました。以下詳細です。 ・トゥルーエンドクリア後、おまけ部屋にスチル閲覧モードを追加 （テキストも少しだけ追加しています。要チェック！※ネタバレなのでモザイクをかけています） ・2階「植物ラボ」左端にいる猫ちゃん研究員から、何回でもにぼしを貰えるようにしました （特に新しいアイテムが追加されるわけではありません。猫ちゃんに無限にぼしをやりたい人向け
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-09-27.
| Genres | Adventure, Free To Play |
| Player tags | Atmospheric · Cute · Psychological Horror · Sci-fi · Surreal · Adventure · Singleplayer · Free to Play (Steam store community voting) |
| Features | Single-player · Partial Controller Support · Family Sharing |
| Languages | Japanese |
| Official site | https://uhmn36.wixsite.com/suisei |
Minimum system requirements (PC)
Minimum: OS: Windows 10 Processor: Intel Core2 Duo or higher Memory: 2 GB RAM Graphics: DirectX 9/OpenGL 4.1 capable GPU DirectX: Version 9.0 Storage: 4 GB available space