Revisited Mini Metro to try out the new maps. Almost unlocked extreme mode on San Francisco and Seoul but just fell short on both.
San Francisco - Reached 1205 on week 8 - needed to reach week 9
Seoul - 1271 passengers, needed 1400 with only one line using tunnels. Was royally screwed by all the late-game squares appearing to the north of the river.
One recent update added the ability for lines to cross (no need to go through a station any more) but trains run slowly over crossing points.
Still a fun game, especially while my brain is a bit frazzled by real life stuff. Anyone else going to return to try the new maps?