Pankration is an authentic Greek combat sport, that was an integral part of the Olympic games from 648 BC, for about 1000 years.
Its name comes from the words PAN + KARTOS, which means:"the one who has power, the one who wins with total strength and knowledge".

Pankration essence is being an Olympic game for all martial arts, because it allows all martial artists and fighters to "play" against each other in a very liberal, but yet safe set of rules.
In Pankration, the only techniques that are ruled out are the ones which may cause irreversible damage like, btutal attack to the head, groin, spine, or joints.
Kicking, punching, throws, holds, bars, knee attacks, elbow attacks, head bouts, and more are all legal, as long as they are executed into legitimate and designated areas.
Contact to the body is full but controlled, contact to the head is light (skin touch, or no touch).
KO, winning by points, submission or quitting awards victory.