The Chaos Cup Open, "organized" by NBC and Orcidas, was anything but organized. For three weeks, the play-offs occurred where any number of teams could play any matches they arranged on their own- the only rule being they could not play a team more than once. To be fair, without any data on number of teams available and who would play, organizing an event like this would have been a herculean task for anyone. For playing these games, points were assigned, and the top four teams with the most points advanced to the semi-finals. Finally, once the semi-finals were played, the Grand Final for the Chaos Cup Trophy and a large sum of money was played between the Marauders and the Dwarf Giants.
The viewing figures were astronomical for NBC, reaching the viewership of the Blood Bowl Championship of '89. Soon, ABC partnered with Bloodweiser in 2491 to put on the Blood Bowl Open. Due to this success, the following netwroks and sponsors put on two more open tournaments. The four tournaments: the Chaos Cup, Blood Bowl Championship, the Spike! Magazine Trophy, and Dungeonbowl, are the major tournaments of Blood Bowl, simply known as "the Majors", and are the most anticipated events of the year.