OFL ("Our Football League") is a long-running (20+ years) pick-up "contact-tag" football game in Cambridge Massachusetts. It is organized and run by Shaun Wolf Wortis.
This rulebook has been honed with the hope of creating a great playing experience which looks and feels much more like the football you see on TV than does traditional flag or touch rules. These rules work very well and if you've found this site and are based outside of the Boston area we invite you to give them a try with your own pick-up games. Groups from D.C. to California have had success using "OFL Rules".