(hmm, it looks like flatpak/flathub installs maps, but to a location that is not found when you just start ./teeworlds_srv from anywhere. I think we should tweak storage.cfg)
exe? i am an linux.... here: /var/lib/flatpak/app/com.teeworlds.Teeworlds/x86_64/stable/9c3c7a1f4ec22bf6c0c5601e180f4a2237262037e7fa79606c3c48fb11039fed/files/bin$