Halo 20th anniversary

The Halo 20th anniversary was an event conducted in Halo: The Master Chief Collection between November 2021 and January 2022. The event was hosted as a part of Series 8: Mythic, and represented part of the shift away from the seasonal model of updates.

Event Exchange
Each week during the Halo 20th aniversary event, new and exclusive items were hosted in The Exchange for purchase with.

Event challenges
To unlock some of the new exclusive nameplates, players could also complete weekly event challenges.