Argh ! Didn't manage to finish the game but it was a fun little experience. I enjoy the Idea and the fact that more and more strangers gets in the train invading your personal space. I must say I had the same experience since I live in a big city.
That being said I feel there is room for improvment. For instance I had a huge sensitivity on the horizontal axis and so later on, especialy on stages with a lot of stranger and so little room for your personal space, I couldn't have the precise movements to place myself well and most of the time I ended up turning on myself stuck at one place gaining a lot of stress. Maybe it was what you aimed for and the weird control where you can only go forward and backward is a nice touch. I just wish rotation would be at least tweakable by the player with an ingame menu.
Also not knowing wich direction you are facing combined with the sensitivity issue for me made it that much harder to navigate.
Other than that, fun little game, I can imagine how fun it would be without strugling with the controls. I also like how the stranger move around even though sometime they are a bit... physical hahaha