Day - 2 Escape from the Carnival of Horrors by R L Stine

 The man that put hands on my shoulders was the AI of the carnival and he asked us to take a few rides before the grand opening of the carnival. And he gave three of us a map each. And before I could say anything he disappeared and the carnival splitted into two parts. In the first there were rides and in the other 'WORLD MOST FREAKING FREAK SHOW'. The story would become interesting from here.