Awesome work! I played some games with the German voice. Though I noticed that when my opponent passed, the voice said “vorbeiziehen”. This is not the correct word here (actually it means “pass” more in the sense of “the caravan passes”). The correct translation is “passen”, but in this situation, the word on its own would sound weird too. So I’d suggest “Dein Gegner hat gepasst” / “Du hast gepasst” (your opponent has passed / you have passed). Maybe some other German speakers can suggest a better translation.
Edit: Some more improvements for the German voice announcements:
- The byo-yomi periods are called “Zeiträume”. I think they should be called “Perioden”.
- When a review starts: “Überprüfung” does not sound right imho. Personally I use the English word “review” even when speaking German. “Besprechung” or “Analyse” would probably be ok too.