Versions 1.1, 1.2(EU), 1.3 German, and 1.31 Multi-lingual of the game are unique in that they are original cd-rom releases. Unlike the 1.31 English and German patches, the 1.40 and 1.50 patches, or the 1.31 French, Spanish, and Italian versions(found within the GOG package of MoO2), these are not able to be obtained readily on the web, outside of buying a physical disc which for some versions can be rather difficult to find.
I have released downloads, alongside brief descriptions and details, for all of the above here: https://moo2loknar.blogspot.com/p/master-of-orion-2-version-history-and.html.
The BraSoft-released 1.31 CD dubbed and translated into Brazilian Portuguese will also be added. It went above and beyond the official language versions, modifying a plethora of game files to change text-button graphics on all screens and menus, as well as providing voice dubbing for the intro and outro cutscenes. The release was built around the 1.31 Spanish + Italian 2-1 EXE file, with the Spanish language files serving as the base for the Portuguese text translations-- the value in LANGUAGE.INI should be changed to 3 accordingly. With the DOS version ORION2.EXE being finished on May 28, 1998 and the Win version ORION95 the day prior. The English-only CREDITS.LBX and HERODATA.LBX plus a few other language files are inexplicably removed from the actual cd-rom. The readme file is also a translation of the English 1.31 readme into Portuguese but is dated as 12 March 1997, suggesting that MicroProse outsourced the Spanish/Italian version to BraSoft while Version 1.31 was still yet to be released. In any case this version contains the same undocumented bug fixes as the Spanish-Italian 1.31 and perhaps more. See pictures below. Download at this link:
https://drive.google.com/uc?id=1ztN8ntOUu9xzHeJgNEILBkRQLTZfzmes&export=download
I have included redundant files so there is no need to patch to English 1.31 first; just in the case of convenience this can be directly zipped into a fresh cd-rom install. Always be sure to back up your entire MOO2 directory.