The Fraternity new member competition is an old tradition of athletic rivalry among the Fraternities, after all, having recruited a bunch of new brothers, it's always good to show those competitors how excellent they are, and meanwhile, take a look at what kind of recruits the others have got, spar a bit, and deepen the understanding.
As for the types of competition, they too are fixed and have been around for many years.
No-pads touch football, a six-person team event designed to display the rookies' teamwork, tactical abilities, and courage. Though it's touch football and physical collisions are off the table, a few tackles here and there are not stopped by the referees, and it's quite normal to finish a game with bruises and scrapes.