This site was, however, quickly obsoleted by the "DOOM Honorific Titles", launched in May 1994 by Frank Stajano, which introduced the first serious competition between players. This site would create the basis for all "DOOM" demo-sites that would follow. The DHT were designed around a notion of earning titles by successfully recording a particular type of demo on pre-determined maps in the IWADs. These 'exams' became very popular as the player had to earn each title by sending in a demo of the feat to one of the site's judges to justify their application. "Doom II" was released in October 1994, and the DHT conformed to the new additions as well as the new "Doom" version releases. At the height of its popularity, the DHT had many different categories and playing styles. For example, playing with only the fists and pistol while killing all monsters on a map became known as Tyson mode, named after the heavyweight boxer Mike Tyson. Pacifist-mode was playing without intentionally harming any monsters. Each category had easy, medium, and hard difficulty maps for players to get randomly chosen for.