This is the definition of cozy. I played this for like a full hour, just jamming out to the banjo and running my route. The way you had the train supplying businesses with materials they needed and the fact that upgrades caused new buildings to appear really made me feel like I was contributing to the growth of a little community. I played until I'd unlocked every single upgrade - I kept expecting to hear the little Steam achievement unlock sound, because it feels that much like a real game I'd have paid money for.