id got "X3: Reunion" from gog. But if I want to start it, I get the message
./X3R_config: error while loading shared libraries: libgtk-x11-2.0.so.0: cannot open shared object file: No such file or directory
I tried to sudo apt install libgtk2.0-0 as recommended here but it says libgtk2.0-0 is already the newest version (2.24.32-1ubuntu1).
I didn't find anything in the Ubuntu Package Search either.
Any suggestions, how I can get the library or play the game without it?
P.S. I'm working with Ubuntu 18.04.1 LTS