Topic: Japanese population in Teeworlds...
... is huge!
I actually didn't know or expect this. There is a small Japanese community but ever since the Steam release, Japanese players just exploded and all Japanese servers (three of them) were all full.
I think this merits for a call to add Japanese font into the game. My understanding of the downsides (there was a discussion on adding Chinese) is that there is a possibility of being slower boot up time and larger memory usage.