HIROYU's Murder Mystery - Echoes of the Spaceship Nil Naught is an indie adventure game that functions as a scenario expansion for the free HIROYU's Murder Mystery session tool. Set on the spaceship Nil Naught, the experience centers on five researchers selected for a terraforming project and the tragic incident that unfolds among them. Players engage in a structured murder mystery format that emphasizes narrative delivery and group interaction rather than open exploration or combat.
Gameplay
The core loop relies on a game master who directs the session using provided instructions. One game master oversees three participants, guiding them through the story via voice communication tools. The game master reads from a dedicated guide and manages the flow, while participants respond and uncover details in sequence. Sessions typically last between one and two hours, keeping the focus tight on deduction and revelation.
Preparation includes an offline preview tool for the game master to review session elements in advance. All participants require the base session tool along with this scenario to access the content. The setup encourages clear communication throughout, with the game master maintaining control over pacing and information release.
Game Modes
The main session mode structures play around a single game master and three players working through the spaceship scenario together. This format prioritizes coordinated storytelling and sequential discovery. A separate GM Practice mode exists specifically for the game master to examine the session interface and flow without requiring other participants or an active connection.
No additional modes appear in the verified details. The experience remains centered on these two options to support both full group play and individual preparation.
Story and Setting
The narrative unfolds aboard the spaceship Nil Naught following a rigorous selection process that brings five researchers together for terraforming research. A sad incident disrupts their mission, forming the central mystery that the group investigates under game master direction. The setting stays confined to the vessel, directing attention toward character interactions and the unfolding events rather than broader world-building.
Language support extends to English, Japanese, Simplified Chinese, and Korean, allowing broader access to the scenario text and instructions.
Requirements and Setup
Participation demands the free base session tool, this specific scenario, and a voice chat application for real-time coordination. The game master and all three players must own the scenario. System requirements specify Windows 10 or later, a 64-bit processor, 4 GB of RAM, DirectX 11 graphics, and a broadband internet connection for multiplayer elements.
- Windows 10 64-bit (version 21H1 or later)
- 64-bit x86 processor with SSE2 support
- 4 GB RAM
- DirectX 11 compatible graphics
- Broadband internet connection
- 1 GB available storage
Is It Worth Playing?
This scenario targets groups that enjoy game master-led murder mysteries with a clear structure and short duration. The format suits players comfortable with voice-based collaboration and sequential narrative progression. As the first scenario released for the session tool, it introduces the spaceship setting and incident in a self-contained package.
Those seeking compact, repeatable mystery sessions with defined roles will find the design aligned with that preference. The absence of user reviews at this stage reflects its upcoming status, leaving individual fit dependent on interest in guided deduction experiences rather than solo or large-scale multiplayer formats.
