Der Dativ ist dem Genitiv sein Tod(2008)

Stage program is based on the book series of the same name by Bastian Sick, which was created from the collection of Zwiebelfisch columns. In an entertaining way, it deals with doubts about grammar, spelling and punctuation as well as expressions in the German language that Bastian Sick considers unattractive. A PC game has also been published to accompany the book.