Hi, momime is definitively to go.
https://sourceforge.net/projects/momime/ it's alive, it's GPL but the archive on SourceForge also include a full java runtime; and the .LBX files have been unpacked in individual .png files (inside momime-client.jar), which we cannot distribute. so there remain a lot of work to do: 1) someone steps in to package Momime for Debian; it's Java, I'm not interested 2) then he coordinates with GDP maintainer, eventually providing a GDP plugin that does the extraction or call an external extractor Sample unpacker tool: https://github.com/pgrudzien12/LbxTools Greetings
