american football is slightly similar only
The game of rugby is most similar to the American game of football. In both games there is a ball, running with the ball, and kicking the ball. Rugby is played in more nations than is American style football. Rugby is, however, a sport played in most US colleges & universities.
American football is the only American sport that has similarities with Rugby. However, these are very few. The Game of Rugby has however seen a massive increase in popularity with the US over the past 2 years
rugby
Ki-o-rahi is a Maori sport quite similar to rugby
American football or rugby
Rugby
Rugby/American football.
The sport Rugby League is the same as in the USA. The competition however is called; American National Rugby League
The British Lions, now known as the British and Irish Lions, play rugby union football.
Rugby Football
Soccer --> Rugby --> American Football
American football is an overly simplified version of rugby league.