A Canadian rider performing a "superman seat-grab"Freestyle Motocross (FMX), a relatively new variation of supercross, does not involve racing and instead concentrates on performing acrobatic stunts while jumping motocross bikes. The winner is chosen by a group of judges. The riders are scored on style, level of trick difficulty, best use of the course, and frequently crowd reactions as well. FMX was introduced to the X Games and mainstream audiences in 1999.