Promo code (Historip13c): Historip13cHistorip(13c) is an experimental version of 'Historip', a wikipedia-based timemachine. You can see a social graph of famous people living in 13th century, and operate that like Google Map. Our final goal is to make historical study more enjoyable or entertainment. As for 'Historip', we already collected historical data (person, location, event, and their relationshop ) from wikipedia. Now Historip is under more visualization and gamification development.