The Sunday Invitational Tournament (or SIT) was the main gaming tournament of the Dark Brotherhood. The fortnightly comp took place in #DBGaming. Gamers received Clusters of Fire (CFs) and top five got 2nd Level Crescents, although only the top three received these awards at first. Run originally by Sith High Warrior Sith Bloodfyre, and then later by the Gaming Tribune, the SIT followed all RoC (Rights of Combat) rules. Gamers also gained points, which were planned to be replaced by the credit system when it is completed. The points could also be used to purchase various items.
To be able to take part in the tournament, players had to play at least one game in a 'qualifying' tournament, which consisted of the other gaming nights. Games played on the other nights earned only CFs.