Not very good. It depends on what you like: Laying track is great. landscape reasonable, but imaginary. Locos and wagons look good, Physics model is very simple. Economy: not good. UI is not so good, cumbersome, and sometimes things are hard to accomplish. Single player: no automation you need to drive every train by yourself. Multiplayer: looks OK, but there have been problems with players mess you world up. For me the major problem is the dev like to ban people permanently without any warning. There was a time there were big rows inside the team and the main dev did not own the train models .Because was not any communication, many people got a bit angry and instead of telling what is going on he started banning everyone that had critical attitude. I can understand that but he never made up and that is not good.