The idea is simple participants are divided into two groups, each group have to have device with internet connection (most comfortable- cell phone).
You will get a riddle after you solve it you will find out where you have to go, it can be anything café, square, monument etc. After you realize where to go, you must get to that place as fast as possible and find hidden riddle or task, sometimes it can be hidden obviously, and sometimes you will have to search really carefully to find it, so be perspective! Task or riddles will not be easy, it may be something from math, logic or art sometimes you will have to decode code, measure, taste or even broke something so be clever and creative! After you solve riddle and got the right answer you will put it down and move to another level, every 5-10 min, you will get hints just in case you stuck.
There are 8-12 levels in game and it will take from 1,5h to 2.5h to solve all them, everything depends on your team abilities. The winner team is the one which will solve all levels in quickest time possible, after the game the results will be discussed and both teams will get special certificates. The game may be finished in café, where you and your team will be able to continue the party.