This is a fun game and really like the fact that it doesn't force ads on you every few mins. It gives you good progress and nothing seems like it is a grind to complete. At this stage I can't say I am very pleased as one I lose progress. I know I have lost progress as i look over at the trains and I have what looks like a bunch of NPCs morphed into a single entity that never seem to get on but or leave. When I see this I know I am going to lose progress. Overall, good game but please fix.