Ravensburger Digital has launched Scotland Yard, bringing the popular board game to the iPhone, iPad and iPod touch. In Scotland Yard, players take on the role of one of five Scotland Yard detectives or the elusive Mister X. Detective players must work together to travel throughout London using a limited number of taxi, bus and underground tickets in an attempt to locate and capture Mister X, who must in turn attempt to evade capture by the detectives,…