The name of the sport is: “Paper, Scissors, Rock”(אבן נייר ומספריים). http://www.topendsports.com/sport/unusual/paper-scissors-rock.htm
2. Rock Paper Scissors (RPS) is a traditional playground game used to break stalemates and determine teams. This game, which is based mostly on luck.
3. According to the Chinese, the first known mention of the game, the game dates back to the time of the Chinese Han Dynasty In the 18th century these games were popular in Japan. It's known in Japan as Jan-ken-pon Rock-paper-scissors came to be played all over the world by the 20th century.
4. The players count together to 3 counts, most commonly either using the name of the game or simply numbers. At the end of the third count, the players simultaneously change their fists into any of three "objects", which they then "throw" by extending it towards their opponent.