I love it!

train gaem

If you've played The Exit 8
Platform 8 manages to reinvent the concept of the previous game. The point is still to progress while dealing with anomalies, but in a different way.
The focus is more on horror, with more obviously scary anomalies and even the occasional jumpscare. And the point is not so much to find the anomalies, but rather to understand how to progress despite them.
Despite being easier and shorter than The Exit 8, the atmosphere was very well done and I quite enjoyed it.

If you haven't played The Exit 8
This is a short and easy horror game that focuses more on atmosphere than actions. The fact that you are concentrating on finding anomalies means you might actually miss clues, and that can make you even more anxious. Said anomalies are quite varied, from simply weird to jumpscary, and your goal is not so much to spot them as to understand how to deal with them.
So if you're into short atmospheric horror games, consider giving this one a try. (And also The Exit 8.)