The linux installer does not work. Some genus forgot to put "./" in front of the binary path that's compiled into the installer binary, so it is not able to call the installer. Bugfix: replace "bin/linux/x86_64" with "./bin/linux/x86_64" - but that's out of the scope of a regular user:

./abandon_ship_1_3_14934_41922.sh
Verifying archive integrity... All good.
Uncompressing Abandon Ship (GOG.com) 100%
Collecting info for this system...
Operating system: linux
CPU Arch: x86_64
trying mojosetup in bin/linux/x86_64
USING de_AT:de

PANIC
Initial setup failed. Cannot continue.

Error: Couldn't run mojosetup