You are looking through the memories of an Agent aboard some kind of space outpost or spaceship. Your job is to figure out what was behind some unnamed disaster.
Characterisation is one of the stronger points of this game. As the PC switches between their own memories and those of the Agent's, the viewpoint characters' affection for their colleagues becomes clear.
I liked the switches between narration styles as well, to distinguish between the two timelines. The banter between the PC and the operator is casual, riddled with jibes at each other; the crew member's narration, in contrast, is stilted, almost, but contributes to a sense of distance - and, if I may say so, alienation. Dimensions are given to the nearest 0.1m; descriptions of dialogue and people are conveyed through lists of adjectives; body parts and bodily functions described as if the narrator wasn't used to them.
It's a slow burn, and I can see where readers might be put off early. The story slips between different timelines. Tenses change, not always consistently. Sometimes there's a wall of text, carrying information that the reader doesn't necessarily need to know. This, at least, is not necessarily bad. It suggests the author has thought about the game universe in depth. But what made me finish playing A Time of Tungsten wasn't the meticulous world building or the thought given to the technology in the world - it was seeing the characters gradually grow and warm to each other.