What is diablo 3 challenge rift?

Diablo 3 Challenge Rift is a game mode in Diablo 3 where players take on a predetermined Greater Rift with a fixed character and build. The Challenge Rifts rotate weekly, allowing players to attempt new builds and conquer them for valuable rewards.

In this mode, players take on the trials of another player's best Greater Rift completion for the week, with their gear and skill set already predetermined. The objective is to complete the rift in the fastest time possible.

Successfully completing a Challenge Rift will earn players a weekly reward chest containing crafting materials, gold, and blood shards. Also, players who complete the Challenge Rift will receive a Challenge Rift Cache, which can be opened only once. It contains all the items and gold that the original player received for completing their Greater Rift.

Diablo 3 Challenge Rift is a great way to practice unfamiliar builds and earn rewards in the game. It challenges players to adapt to a new build and playstyle to succeed in the rift.