I loved the graphics and sounds. And the feeling is quite good when playing the game.
It took me some time to figure out the gameplay however. In particular because you can manage to connect all the cities according to the information at the top of the screen by having several connected components. However, to finish the game you need to have a path between any two stations.
I did not understand what was the interest to "plan" instead of just building.
Also, I finished several games, it mentioned a leaderboard, but I never managed to access this leaderboard…
Finally, twice the game seems to have crashed: nothing was responding and I had to reload. I was not able to identify anything particular that I could have done before the crash.