Adventurers receive a series of clues to solve which will lead them to various locations around their city.
They have to get to each location and once there, may have to solve a further challenge.
Challenges may be simple problems like solving anagrams or crosswords, or may be something completely different.
The common theme is that they are designed to maximize the fun of the event. Once they have solved the clues and completed the challenges, adventurers have to get to the finish line to claim their prize.