If you are planning to organize hardcore group sex party, this video will show you a few things you need to know in order to make it successful. First of all, let's consider the question - what is a hardcore party? A hardcore party, according to some people, can be defined as a "hardcore group sex party in which the participants engage in acts of promiscuous and often explicit sexual intercourse." So, what are the most important elements of a good hardcore group sex party?.