Recently MDK was updated with support for additional languages, but there doesn't seem to be a way to actually download them. Anybody knows when the lang pack will be avaiable?

Messy way that GOG handled these... They did too many updates in one day and there are mistakes everywhere.

MDK 1:

Despite the lack of specific download links for each language, as is usual even for multilingual installers, the "English" installer available right now includes all the new languages (and English too, of course).

Careful, you need to select the actual in-game language in the Options button (Opcje) at bottom left of the installer window.

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MDK 2:

The installer files are available, but they forgot to add the links to download them in the Library page.

Try the following link to download the Polish version: https://www.gog.com/downloads/mdk_2/pl1installer0

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EDIT: I just tested the MDK 1 installer and tried Spanish in-game language... the installer hanged. <sigh> So I don't know if you will be able to install the Polish version.

I should report these errors to support, but I'm really not in the mood right now.

My bad. It was my fault that the installer hanged. It is working just fine and I was able to install the Spanish version with the "English" setup.

Oh, that's certainly true, they messed this up. I'd never guess there's something actually of use in the "Options" menu in the installer. Many. many thanks!

Enjoy!

And MDK 2 now correctly lists all the languages for the downloads. I don't know if they were missing or if it was a cache misshap in my browser (doubt they fixed it so quickly if it was an error)