 The Royal Rumble is an annual gimmick pay-per-view, produced every January by the World Wrestling Federation (WWF, now WWE) since 1988.It is one of the promotion's original four pay-per-views, along with WrestleMania, SummerSlam, and Survivor Series, later dubbed the "Big Four".It is named after the Royal Rumble match, a modified battle royal in which the participants enter at timed intervals instead of all beginning in the ring at the same time.