After a few games of Cyan, I'm toying with the idea of trying Quern as well. Unfortunately, the audio seems to be in English only - but I suppose there are German subtitles, although I hate subtitles (you have to read and don't get anything from the picture...). I hope there's not too much talking. It's a different story with all the clues, buttons, marks, notes and or diaries, which certainly appear in an adventure game like this and contribute significantly to solving the puzzles. Are they in German?