Niche thing I've just found that I'm into after playing Infra. In short, games with no combat where the main point is the exploration of abandoned man-made environments (houses, ruins, apartments, sewers, etc.), either fictional or realistic. The protagonists in these games don't necessarily need to be doing Urbex themselves, but the game needs to convey a similar feeling.

Any suggestions are more than welcome! I need more of this stuff. I haven't played all the games listed, btw.