These patches recognize a specific game, series of games, or multi-day event.  Most do not specify a target audience or are designed for officials, but there are a few intended for announcers, photographers, skaters, volunteers, etc.

This was a special night-before-their-wedding bout with teams lead by Scald Eagle and Lady Trample.  The loser of the game agreed to take on the surname of the winner.  Scald Eagle's team won 200-197.  The event featured lots of derby stars (current and retired), and the officials were a mix between local officials and wedding guests.