The info I got from The Adventure Shop advert is:
Game Info
Platform: Windows
Language: German
I will move your post to Discussion forum to see if someone knows if it is possible to change the language.

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gameho,
I'd recommend that you write The Adventure Shop and tell them about the language problem and see if they can straighten this problem.

Also another thought - check the manual that is in the installed folder - if it is in a translatable format - to see if there is a language change possibility.