Rail of Möbius

Rail of Möbius

Released Aug 2021

It is an adventure game with multiple endings. An original script written by a well-known light novelist with a total of 400,000 words. With reasoning, suspense, love, and science fiction elements, it allows players to embark on a highly immersive journey of salvation on the submarine train.

95% positive · 490 reviews
Done
All announced content has been released
High confidence
Done
All announced content has been released
High confidence

Where to buy

Steam $12.99
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Evaluation

Rail of Möbius launched on August 31, 2021 as a complete visual novel / adventure game with a self-contained story of approximately 400,000 words and multiple endings. Both DLC items — a soundtrack and an art book — were listed on the store before the game even launched and were released by July 2021, meaning they were pre-production companion products rather than post-launch story content. Post-launch developer activity was limited to a small number of patches addressing translation quality, performance issues, and minor text corrections — the most recent being a January 2024 optimization update. No new story content, expansions, or additional endings have ever been announced or released. Starting from August 2023, the developer's public communications shifted entirely toward promoting their next games: first "Project: AHNO's Ark" (a turn-based strategy title), and then "Psycho-Sleuth" (a new mystery visual novel). A post from October 2025 explicitly frames Rail of Möbius as the team's "first title" and thanks its players for supporting the studio's journey to their next project. This is the clearest indicator that Rail of Möbius is a finished product — the studio has moved on. The game launched as a complete, finite narrative experience and has received no post-launch story or content additions. All DLC was released before or at launch. There are no unreleased DLC items, no announced future content, and no active development pattern for this title.
Evidence
Developer explicitly refers to Rail of Möbius as their 'first title' and thanks its players for supporting the studio's journey to their new game, Psycho-Sleuth — framing the original game as a completed chapter.
news post · Oct 3, 2025 source development ending
high
Developer announces their next game, Project: AHNO's Ark, marking a shift in studio focus away from Rail of Möbius.
news post · Aug 10, 2023 source development ending
medium

Content

2 of 2 released · no outstanding content

Media

Details

Developer
Publisher
PHOSEPO
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player

About this game

▌ Prologue

Enter a bloody loop of fate deep under the ocean. Will you become everyone’s salvation?

A train shuttling underwater carrying students and teachers on a graduation trip is suddenly trapped in a strange time loop, endlessly experiencing the moment of a derailing accident......

▌ Introduction

Our protagonist Ren and his friends are onboard a high speed rail train, which is a tourist attraction that goes through the belly of the sea. What they do not know is that once upon a time, the train is a vehicle for time travel experience.

The joyful journey quickly spirals out of control when the train derails, locking everyone in the moment of the bloody incident that endlessly repeats itself.

Ren happens to be the only person that remembers each and every fateful loop. But what’s even stranger — with each repeating loop, one more of his classmates dies before the train’s derailing moment. A mysterious murderer has appeared, and in the name of deliverance hunts down and kills Ren and his friends......

▌ Characters

Male protagonist. He loves railroads and trains, especially the epoch-making undersea broad gauge tourist train "Time Traveler".

He has a straightforward personality and up to two friends. He has grown up with

Cecilia and Sol since childhood. No matter what happens, they would face everything together and solve them.

A childhood friend of Ren, she has a therapeutic personality. Her dream is to start a beautiful and ordinary family.

The sole heir to the Caecius Corporation. Also the inventor of the time machine during the time travel on the undersea railway.

She is beautiful and is versed in both literature and military affairs, but under the perfect appearance, there seems to be a hidden side.

There was a rumor on campus that she was conducting some kind of grisly experiment using humans.

The personal maid of Luna. Also an underclassman of Ren, Sol, and Cecilia by one year. Will do anything for Luna, even if it means sacrificing her own life. Seems to have experienced something in her life, making her expression always that of a gentle smile.

A friend of Ren and Cecilia. A star player of the school basketball team. Has a very robust build, but seemingly not too much of a ladies’ man. Always confused about the subtle relationship between Ren and Cecilia. Half of it is out of worry, and the remainder is frustrated watching over the two of them.

???

▌ Staff

Story by: LittleDeer

Manager: Springfish Studio

Director & Programmer: Liang Long

Character Design & CG Artist: Yu Shiliang

Super Deformed & Comics Artist: Moco

Translator: Rich Lee

Last evaluated Jun 24, 2026
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