There are variations of these basic rules, particularly in American football.

that are designed as contactless or non-contact alternatives. limited contact to the relative violence of regular American football. in football touch and flag, disarming is normally not allowed. The players offensive players are “attacked” when a defender marks them or removes a flag of your body, respectively. Both varieties are played mainly in informal environments, such as intramural or youth games. O professional, college, and college football invariably use standard combat rules. Another variation is with the number of players on the field.
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in areas sparsely populated, it is not uncommon to find high school football teams midfielder playing nine-man football, eight-man football or six men. Players often play both offense and defense. The Arena Football League is a league that plays eight-player football, and also play indoors and on a much smaller playing surface. Most football players have highly specialized roles. Us college and NFL levels, most play only offense or defense, but many will act as players for special teams.

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