when I start Mini Metro, I'm only able to play London. There are no options for other cities or screen settings. I can only turn on night mode and sound. I already unlocked other maps and was able to change the screen resolution before (e.g. last year).
I don't know when exactly this happened, I've noticed it when the game updated itself on steam a couple of weeks ago.
It's the same on two different notebooks, one with Ubuntu 14 and another with Ubuntu 16. Both have all the latest drivers and updates installed.
I purchased Mini Metro in October 2014 when it was beta.
Do you need any other information? Or I'm just too bad and need to transfer certain number of passengers to unlock other cities (my best score is 1400-ish)?