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About MAMIYA
MAMIYA is a dark‑mystery adventure set in Tokyo during the year the world is foretold to end. A group of young men confront existential dread until a strange child named MAMIYA appears, pulling them onto a new, ominous path.
The Complete Collection adds over twenty possible endings, more than 180 illustrations, and a music‑driven narrative. It runs as a single‑player title on Windows and macOS and includes Steam achievements, cloud saves, and family sharing.
01 / THE GUIDE
Story and Setting
The plot unfolds in contemporary Tokyo while the world approaches its predicted apocalypse. Daily life feels monotonous until MAMIYA, a mysterious child, inserts themselves into the protagonists' routine, shifting the narrative toward an apocalyptic adventure.
The setting stays grounded in modern city life but hints at supernatural elements through subtle visual and textual cues. Observing these hints helps the player understand how the story diverges from ordinary reality.
- Read dialogue carefully; hidden phrases often foreshadow later events.
- After new scenes, glance back at earlier moments to catch missed details.
02 / THE GUIDE
Characters
Key figures include Kikuchi Ryou, a solitary high‑schooler supporting his sister; Toujou Minato, a cheerful class star who practices judo; and Morichika Haruki, a conflicted drifter. Additional characters such as Suou Keito, Midori, Mina, and a librarian expand the cast.
Each character carries distinct personal struggles that affect how they respond to MAMIYA’s influence. Their interactions shape the branching outcomes, making it useful to track individual motivations.
- Keep a note of each character’s background to anticipate their reactions.
- Watch for recurring symbols linked to specific characters.

03 / THE GUIDE
Multiple Endings
The Complete Collection offers more than twenty distinct endings, ranging from catastrophic destruction to moments of personal growth. Player choices and attentive observation determine which conclusion is reached.
Because the narrative rewards careful reading, subtle decisions and hidden dialogue can unlock less obvious outcomes, encouraging multiple playthroughs for those seeking every ending.
- Save before major decisions to test alternative paths.
- After an ending, review which clues you missed to guide future runs.
04 / THE GUIDE
Illustrations and Music
More than 180 illustrations accompany each scene, providing visual context from everyday moments to surreal, apocalyptic visions. The artwork reinforces character emotions and plot twists.
A curated soundtrack blends with the narrative, using musical cues to highlight tension, revelation, or emotional beats, deepening the overall atmosphere.
- Notice background details; they often hint at upcoming plot twists.
- Listen for recurring musical motifs that signal important story moments.
05 / THE GUIDE
Platform and Steam Features
MAMIYA runs on Windows and macOS, offering single‑player gameplay with Steam achievements, cloud saves, and family sharing. These features let progress be stored online and shared across accounts.
Linux support is not listed, and no controller requirements are mentioned, indicating the game is designed for keyboard and mouse interaction.
- Enable Steam Cloud to protect your save files.
- Use Family Sharing if you want friends to try the game without buying it.





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