Nine-man football, eight-man football, six-man football – variants played primarily by smaller high schools that lack enough players to field full teams. Street football/backyard football – played without equipment or official fields and with simplified rules Flag football – non-contact variant in which a flag attached to a player is removed to indicate a tackle. Touch football – non-tackle variants Canadian football – called simply "football" in Canada; "football" in Canada can mean either Canadian or American football depending on context.