it strikes a nerve because the design is very familiar to people using metros or buses. And certainly don't underestimate the number of people who are borderli

it strikes a nerve because the design is very familiar to people using metros or buses. And certainly don't underestimate the number of people who are borderline obsessive with transport networks, trains, and anything involving traffic (myself included). Almost any game that adds a good gameplay element to managing or routing trains or traffic is going to do OK. Cities Skylines has done well with this crowd, too, after SimCity decided to start focusing on "Sims" style games and ditch the traffic aspects.