Soccer Girls Playing Topless

* Speedball (American) - a combination of American football, soccer, and basketball, devised in the United States in 1912.
* Universal football - a hybrid of Australian rules and rugby league, trialled in Sydney in 1933.
* Volata - a game resembling Association football and European handball, devised by Italian fascist leader, Augusto Turati, in the 1920s.
* Wheelchair rugby - also known as Murderball, invented in Canada in 1977. Based on ice hockey and basketball rather than rugby.