Assassin is a live-action game played at high-schools in USA. This one triggered the idea of creating the Hide&Seek game for universities, neighborhoods, cities and countries. Anybody can join the game at any point. There are two type of players: those who are hiding and those who are seeking. Each of them can see on the screen of his/her phone a map with a distance of all people involved in the game. Once a seeker is in less than one meter distance from someone who is hiding, the latter goes to jail. Therefore all the hiding people need to perform a special action to bring their fellow player back in the game…