Howdy, this is such a lovely game! It's very nice and calming, I only have a few suggestions as of this moment.
- A colorblind mode/aid could be very useful, I didn't even realize the routes were different colors until I got a discrepancy for it. Maybe each route could have it's own unique symbol?
- This isn't a bug, but for the story mode at least, I've found the stamps you get are rather unbalanced in what the packs give you. I never used the bigger ones, I personally never encountered a package that took more than 200 to send, but I consistently ran out of 25s and 50s even if I still had the space in the cargo for the packages. On the last day of story mode, I had three packages I simply couldn't send because I didn't have the stamps for them, despite having purchased an extra stamp pack. Maybe you could alter the packs so that you get more little stamps and less big ones? Or did I just get. really bad luck with that