I had a metro station that was overfilling, but the metro wouldn't pick up any of the passengers, so it overfilled. Is this some kind of bug

Hi all. I think the Daily Challenge is a big part of what makes Mini Metro fun. But there's sadly no good way to communicate with other daily challengers, and it's more fun to play against people than just names on a scoreboard. So, I (and at least one more daily challenger) think it would be a good idea to have a thread (this thread) where people could say something/anything about today's challenge. For example, I've seen people expressing their happiness about getting good placements, in the screenshots...

I don't see any achievements anywhere even though I had them all unlocked. What happened to them?

If you'd like to suggest a city for Mini Metro, please take a look at this thread in the Dinosaur Polo Club community . We've locked down the cities that will be included in the initial launch, but it's very likely we'll add more during 2015. To check up on the progress that's being made on the cities, take a look at our Trello board ....

So when i'm asked to choose between a line or a vagon, should i choose the line? (also sometimes there's the "large station" idk how it's called in english since i'm not a native speaker, but the upgrade that makes station larger and faster, wonder if it's worth it) It's better to have many lines but short, or a mix of long and short lines? I mean, are more lines with a single train more effective than a few lines with a lot of trains? Also, is having a central "hub" where all lines connect, is good or bad...