This is a fun, and well-made, application that lets you redesign the New York City subway system to your heart's content, and which tells you what the ridership and fare cost would be for rides on that system. You can start from scratch or use the existing or future system and then make tweaks to design the ultimate transit system for the city. I don't live there, but this is the kind of application I've dreamed of making - design your own subway? COOL! If you want an actual video game that's similar, check out Mini Metro (a Google search will find it) for some more fun.