Make LMarbles use the B_USER_SETTINGS_DIRECTORY
completed by: :Puckipedia
mentors: Scott McCreary, Jerome Duval, Adrien Destugues - PulkoMandy, humdinger
Since you'll have to work with haikuporter and recipes, you'll have to have successfully worked on a welcome task "INSTALL HAIKUPORTER AND THE HAIKUPORTS RECIPE DATABASE" or any other recipe creating task.
Create a new patchset with haikuporter for games-puzzle/lmarbles to write all its settings, highscores etc. in B_USER_SETTINGS_DIRECTORY. Currently it's using a .folder in /boot/home and maybe other locations.
Create a pull-request for the haikuports repo with your changes.