https://wccftech.com/battle-for-azeroth-fastest-selling-expansion/

The seventh World of Warcraft expansion, Battle for Azeroth, has become the fastest selling expansion in the franchises history, Activision Blizzard has announced.

More than 3.4 million copies were sold on its launch day earlier this month, thereby beating the sales records set by the previous World of Warcraft expansions, including the Legion expansion from 2016.