This game creates a non-hidden state directory (~/triplea/) on the home
directory. It should create it as a dot dir on the home dir (preferably
following the XDG base dir spec ).
The culprit seems to be:
The game should use $XDG_DATA_HOME/triplea or $HOME/.local/share/triplea if XDG_DATA_HOME is not set for user specific data and $XDG_CONFIG_HOME/triplea or $HOME/.config/triplea for configurations if $XDG_CONFIG_HOME is not set.