Dark Echelons (2003)

User summary:

In Dark Echelons humanity has already jumped to the stars, but although it knows the Galaxy, it will never know what is hidden behind it. Man has called attention to the supernatural and the malignant. The alpha spiral of our galaxy belongs to a decaying cosmos and a decimated humanity survives on forgotten planets, beset by infernal hosts of beings arising from a paranormal dimension.

The player characters must survive in the solitude of a spaceship, collaborate with the Red Templars in the investigation of the paranormal, expose the deranged minds that cause horror among the population, etc. Even so, all this is nothing more than the outer layer of true reality. They must discover what is really hidden behind these strange isolated events.