This is fantastic activity if you have couple of hours to spare and want to see the beauty of the city from a different angle. Our guide, Michael, was a great support at the beginning and at the end, however, once you set on the mission, you are on your own. Well, not really, if you get lost or can not find the way forward, there is always a hint envelope you can open. But we did not and if we would not stop for a beer half way through the game, who knows, we might have achieved one of the top times. But make no mistake, this game is no race, so enjoy it, take a photo, sit in a bench if you like and most importantly: Play Across Prague!