In the game box, you'll find eleven sealed and numbered envelopes. In these, you find small tasks that need to be solved. Led by clear directions,  walk around the Erfurt old town, solving the puzzles in order to get to the next station. As solution for the puzzles, you get a number that tells you what envelope you have to open next. As you criss-cross through the city, you’ll receive detailed background information on the history of each site that you reach.  You decide for yourself when to start the tour, and along the way, take as much time as you’d like stopping for a bite to eat, a coffee, or to do some shopping. The game starts at the famous Erfurt Cathedral, and leads you through the city’s most historic sights. Walk pass Kaufmannskirche, Stadtmuseum zur Krämerbrücke, and the Petersberg Fortress. Above all, experience the city in a unique way, having a blast with your family, friends, or yourself. Please note that the game is in German.