CLOSED GALAXY ～ワタツミより愛をこめて～

There is something in this spaceship.
An SF horror mystery adventure game depicting a life-and-death battle with an alien that mimics your companions

Game Overview
While waiting for rescue on a stranded spaceship, you encounter a murder case.
If you don't identify the culprit, your life and the lives of your companions will be in danger next.
Overcome numerous difficulties such as obstruction by a rampaging AI, investigation and deduction, battles with an alien mimicking your companions, and safely escape from the spaceship.

Game System
・Novel Part
Enjoy the overwhelming amount of text describing the interactions with your companions and the horror that takes place on the stranded spaceship.

・Investigation and Deduction Part
Investigate the crime scene of the murder and related locations to gather clues to identify the culprit.
Based on the collected clues, make the correct deductions and corner the culprit.

・Boss Battle
Fight and survive against the alien whose identity you've exposed in a turn-based battle with choices.
By carefully ascertaining the alien's actions and choosing appropriate actions, you can deal significant damage.

Story
In the year 2503 AD.
The spaceship "Watatsumi," carrying students on a school trip, suddenly becomes unable to navigate due to an unknown cause.
The 12 students and teachers who awaken from cold sleep decide to wait for rescue, but during that time, a murder occurs.
Amidst the control of a rampaging AI, the protagonists are forced to participate in a game to identify the culprit...
Will the protagonists be able to survive safely?
And what will be revealed about the identity and purpose of the culprit?
The curtain rises on this SF horror mystery adventure depicting a life-and-death battle with an alien that mimics your companions!