MarkoH01: The GOG version of Neighbours From Hell (1+2) is multi lingual. To change the language simply rename the files in the data folder overwriting the English ones.

German:
ger-gamedata.bnd => gamedata.bnd
ger-game.xml => game.xml

Spanish:
esp-gamedata.bnd => gamedata.bnd
esp-game.xml => game.xml

French:
fra-gamedata.bnd => gamedata.bnd
fra-game.xml => game.xml

The only thing that still stays in English this way is the "Neighbours from hell" logo in the title screen. There is a third multi-language file (XXX-gfxdata.bnd) but renaming this leads to the game not starting anymore.

MarkoH01: Did not check my library yet but does this mean that there is no need anymopre to fiddle wit the files at all and you just have to download the version you like? So does it also mean that the gamecard has been changed so that the game is officially supporting those other languages now? I just have to check this and if this really is the case that would be great. Thank you for letting us know about the latest version :)

Edit: Yes it does. :) Did not receive a flag yet (hopefully it comes later) but downloading now. :D