If you are looking for RR game like Railroad Tycoon, Transport Fever 2, or Railroad Empire, look elsewhere ... this isn't the game for you.
This is a timed puzzle, you use railroads to move EVERYHING (including power produced by power plants). Even if two buildings are adjacent, you need to set up a railroad to move material between them. Personally, I despise any kind of time constraint in my games, and wrote this game after watching Nilaus' video.
But the timer isn't that bad. First, for each puzzle, the timer doesn't start until you build your first train. So the player can build factories, track, mines, train stations, etc., etc., assuming he/she has enough yen. Once the first train is built, the timer starts. Even saving & exiting the game doesn't doesn't allow the player to view the current state of the map.
The faster that you complete a puzzle, the better your letter rank (S, A, B, C).
Objective: Most puzzles involve exporting off the map, or supplying a city, with a certain amount of some item. But some involve achieving an export rate (e.g export 20 appliances per minute).
Suspect that I haven't played half the map yet, The puzzle start becoming tediuous, and for that reason, I've put this game away for while. Good graphics & tutorial. And the UI is intuitive; laying track & dealing with signals is easier than Transport Fever 2.