[Guardian]

I hate the loop requirement. Doesn't make sense from the way an actual subway runs, but what can you do? I usually save subways for later in the game, and place them mostly in the metropolitan areas because of the loop. I might do a loop around the outer perimeter as well, but don't spend too much time on them, because adjusting them is miserable.

If anyone has good tips, I'd love to know them as well!