No choices but deduction. No game over. No multiple endings. A mystery "novel" adventure you can play with the same focus as reading a detective novel. Defy the sun with twenty-six bullets—even if the revolution of the heavenly spheres cannot be stopped.

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Planned Release Date: 2026

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About This Game

     No Choices But Deduction.

     No Game Over.

     No Multiple Endings.

 

     Your choices will change neither the story nor the movement of the celestial bodies.

     The only thing you can do is pull the trigger—and deduce.

 

     "Crimsooon Sun" is a short mystery adventure designed with a singular concept: "A mystery game you can play with the same level of focus as reading a detective novel."

     The story takes place in Shirase, a regional city in the Tohoku region. It begins with the return of Mio Fujimaru, a university student who had been missing for nearly six months. She remains silent about her disappearance. However, a video exhibited at the university festival reveals a chilling sight: Misao being pushed down a wedding aisle in a wheelchair by a mysterious "the Faceless Man," while "the Dual Suns" are reflected in the window.

     This is a mystery "novel" adventure. When reading a detective novel, one doesn't always have a perfect, logical solution like the detective in the story. Often, we rely on vague intuitions:

     "Something about this statement feels like a lie."

     "This person seems suspicious."

     "This description might be related to a trick."

     Such intuitive reasoning often clashes with traditional game systems that require picking the "correct" choice to proceed.

     Inspired by "Mikagura Shojo Tanteidan" (Mikagura Girls' Detective Agency), a classic title released for the PlayStation by Human Entertainment, this game cuts away all unnecessary choices and branching paths. Instead, you "pull the trigger" whenever something piques your interest. With the 26 bullets of information you’ve gathered, your only task is to deduce the truth.

 

     Defy the sun with twenty-six bullets.

     Even if the revolution of the heavenly spheres cannot be stopped.

AI Generated Content Disclosure

The developers describe how their game uses AI Generated Content like this:

AI-based translation tools were used for localizing the in-game text and store page descriptions from Japanese to English. All translated content has been reviewed and refined by the developer.

System Requirements

Windows
SteamOS + Linux
    Minimum:
    • OS: Windows 10
    • Processor: 2.0 GHz Dual Core or similar
    • Memory: 4 GB RAM
    • Graphics: DirectX 10 compatible graphics card with 1GB VRAM
    • DirectX: Version 10
    • Storage: 500 MB available space
    • Sound Card: DirectX compatible sound card
    Minimum:
    • OS: Ubuntu 20.04 LTS or newer
    • Processor: 2.0 GHz Dual Core or similar
    • Memory: 4 GB RAM
    • Graphics: OpenGL 3.2+ or Vulkan compatible
    • Storage: 500 MB available space
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