http://bugs.winehq.org/show_bug.cgi?id=33439
--- Comment #2 from santzi76@suomi24.fi 2013-04-22 00:38:31 CDT --- First you need to copy the "save game" file to correct place, if you couldn't browse it via game. "Saved games" -folder is located to under moo3 installed folder.
You could start the game and load saved game from via main menu.
I could try this moo3 also with Wine 1.5 version, but Linux is then Ubuntu 12.04 LTS (x86_64).