Kronum is a sport which was invented in 2008 by Bill Gibson. It is currently played only in the United States, with professional league games taking place in Philadelphia, Pennsylvania. Kronum is becoming more popular in Europe^{[citation needed]}. Gibson decided to include elements of different sports: soccer, basketball and handball. The main philosophy of Kronum is to introduce a new gameplay experience to the world of sports, this is why the main slogan of Kronum is “join the revolution." This sport combines classical activities (football, basketball, handball, rugby…) into a common sport where players can contribute their unique skill-sets to the game. The website of the American Kronum league also works like a social network where fans and players can stay in contact.

Kronum is played by two teams, each with 10 players on the field at all times. The match is divided into three phases of 20 minutes. The goal of this sport is to score as many points as possible. When someone scores a goal, the number of points are depend to the place where the shot was taken on the field. Kronum goals have at their top five rings which have a diameter of 20 inches (50 cm). When a player scores through one of those rings (“Ring Shot”), points are worth twice what they would be scoring into the chamber. Physical contact is allowed like in rugby for example, though excessive contact may result in the fouled player, throw-in is done on boundary circle and contact while act of shooting may result a penalty shot to be kicked or thrown from the tip of the wedge zone.