Cthulhu's Revenge 2019 Event

 is the 7th minor event of 2019 and 45th minor event overall. It was released on September 25, 2019, shortly after the conclusion of Krusty's Last Gasp Online 2019 Event, and ended on October 9, 2019.

The event started with the short quest IrreSpawnsible, followed by the main questline Cthulhu's Revenge.

Trivia

 * The Cthulu’s Revenge event is based on the intro to Treehouse of Horror XXIX