It's called Subway Builder. I have not even opened it so I can't tell you if it's any good or not, sorry.

ETA: I decided to just push through because I am at my computer anyways and promised myself I'd play as a treat for filling out some fuck ass insurance forms. By the time it updated in steam and then updated in the game (why both? who knows?) I'm too frazzled from the unexpected roadblocks/delays that I can't understand the tutorial. So I'm going to go sit in the dark instead 👍