The game is very intuitive and was able to get me into a flow state (got 28 points, so not too bad), but as many others are saying it is a bit too difficult, and that a less complex map would have helped. The slow-mo did help, but it was still hard to focus on more than one train and the path it would travel at a time. Overall a really solid game, with a good fun core!
(Also as a more minor note even though it didn't effect me, I would recommend making it so the trains/locations are color+symbol, to make it more accessible towards colorblind people and just more readable at a glance overall)