Multi-directional lines


I know this is probably an intentional game design for convenience’s sake, but I just want to say that a single line of metro does not need to only have two directions or be a loop, as illustrated by line 3 in my hometown Guangzhou, China. This is probably true in some other cities as well. Basically the vehicles will alternate between going one way or another. Given that the game limits the amount of line one has, I would suggest a limited option of splitting lines for more room of flexibility.