Althaea Murder: Sci-Fi Mystery Aboard a Spaceship

8/26/2026, 1:49:15 PM

Release date: 10/8/2025

Tags: #sci-fi #mystery #choose-your-own-adventure #singleplayer #visual-novel #adventure #story-rich #space

User Reviews

Score: 88%Positive
Review Count: 24 reviews
Fetched At: 8/26/2026, 1:49:15 PM

Reference prices

Japan

¥ 1,300 (JPY)

Steam JP

$10.99 (USD)

Steam

Live Store Snapshot

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Japan Price: ¥ 1,300
Global Price: $10.99
Price in Your Region: ¥ 1,300Prices as Steam lists them per country. What you are actually charged depends on your Steam account settings.Regional prices checked: 30 Aug 2026
Sale Status: Regular pricing
Price Checked At: 8/26/2026, 1:45:55 PM

Key highlight

Embark on a thrilling sci-fi mystery aboard the spaceship Althaea. Play as the ship's Master AI, partnering with an android to solve a series of inexplicable events following the recovery of a mysterious capsule.

Who this is for

From the scenario writer of the "Detective Saburo Jinguji" series comes a sci-fi mystery adventure set aboard a spaceship. Players take on the role of the ship's AI, teaming up with an android to unravel the truth behind unfolding events. Experience a deep narrative and suspenseful atmosphere.

Details

Overview

Step aboard the Althaea, a vessel tasked with recovering the remnants of humanity's most advanced research base on Jupiter's moon, Callisto. What begins as a salvage mission quickly descends into a chilling sci-fi mystery when the recovered capsule contains the frozen body of a brilliant engineer, an android companion, and an extraterrestrial life form. As inexplicable events unfold within the confines of the ship, suspicion and fear grip the crew. Players will assume the role of the ship's Master AI, partnering with the android Flem to investigate the unfolding crisis.

Highlights

A Deep Sci-Fi Narrative: Developed by the acclaimed scenario writer behind the "Detective Saburo Jinguji" series, this title offers a compelling space-faring mystery.
Unique AI Perspective: Take on the role of the ship's Master AI, directing the android Flem to explore, gather clues, and interact with the crew.
Atmospheric Thriller: Experience a story rich with suspense and paranoia as you navigate a closed environment where danger lurks among the crew.

Who It's For

Fans of narrative-driven mysteries, science fiction settings, and visual novel adventures will find themselves engrossed in the intricate plot and suspenseful atmosphere of Althaea Murder.