Solve challenges, and as the story unfolds, be led to the next location using directions sent to a cell phone. Download the game into a cell phone and begin exploring. Begin the game at the St. Nedelya Cathedral Church, and end at the Temple of Bulgarian Martyrs. The entire game is designed to take around 1.5-2 hours to complete, but exploring off the game's route is allowed and encourage, and the game can be returned to anytime. Play alone, in a large group, or compete with other groups and meet at the final stop of the game.