You can use the "Inflate Save Files" option in the Developer Options menu.

Enabling Developer Options works the same in Steam as in the test version: place a show_hidden_options.bool file in the /Stars in Shadow/ directory, and restart the game. When in the Options menu, click on the window title ...

Hi,
could somebody please tell via what algorithm/library savegames (assignments.lz, galaxy.zlua) are compressed?

Wanted to see if a starting galaxy (in particular, star locations) can be modified by savegame editing, tried to enable hidden options listed in the README by creating *.bool file, but ...