Roller Derby is modern entertaining and adventurous, contact sport. It is a team sport consisting of five players each side. The teammates are required to perform their roller skating counter-clockwise direction in their designated course or track. Roller derby was originated in the banked-track roller skating marathons of the 1930s. 

The gameplay consists of a series of short matches (jams) in which both teams designate a jammer who wears a star on their helmet. The jammers score points for the team by lapping members of the opposite team. The members of one team try to hinder the opposing team members. The team altogether attempt to cross over the opposite team's jammer while assisting their own jammer. 

In the modern age, roller derby has successfully emerged out as an international sport, which is mostly played by amateurs. Majorly the teams are dominated by women, but nowadays, the number of men is also increasing.