I was completely confused right at the get go, a little tutorial would be nice. It doesn't feel like it connects that much to the theme but I suppose it's what you got from it. If the game is changed a bit and gets completed, this could be a fun little game.

A bit chaotic and kind of not fun, also where does the theme apply?

other than that, very creative and could be polished up into a real game!

A bit too chaotic. It would be much better if the game started with max 3 train rails and slowly getting harder

The game feels a bit too difficult. I believe the difficulty should be easier at first and get harder and harder. Currently, I feel like the game is difficult and gets even more difficult with time which does not feel great.

Maybe try to have fewer and shorter trains at first.

I don't feel like the player has enough information to know when the trains will actually arrive. It would probably be better to have something like a number to indicate the order of appearance of the trains.

As for the visuals and the sound/music, they are quite dull and the game feels like it doesn't play enough with the theme. 

I initially struggled to understand how to play or what to do. I think the idea is very creative though but getting the information to the player could help with the gameplay.