Die verlassene Bibliothek

Die verlassene Bibliothek ("The lost library") is an escape game which consists of only cards.
The door of the library is locked shut and the players are stuck. They will find various combination locks throughout the room. They need to complete the puzzles to obtain the codes for these locks. The players can only escape from the lost library if they collaborate closely and really put their heads together to puzzle over the clues.

—description from the publisher