Fantasy football (board games)
Fantasy football is a genre of board game or wargame which normally involves two teams of fantasy races (such as elves, dwarves or orcs) competing in an extremely violent variant of gridiron football. Often the only resemblance to gridiron football for many fantasy football games is to get the ball into an end zone or goal, but these games still fall under the fantasy football genre.
Arena football
Arena football is a variety of indoor gridiron football played by the Arena Football League (AFL) and China Arena Football League (CAFL). The game is played indoors on a smaller field than American or Canadian outdoor football, resulting in a faster and higher-scoring game. The sport was invented in 1981, and patented in 1987, by Jim Foster, a former executive of the National Football League and the United States Football League. The name is trademarked by Gridiron Enterprises and had a proprietary format until its patent expired in 2007. Due to the patent, other indoor American football leagues that launched following the popularity of the original AFL developed variants on the arena rules.