Ubisoft says that not only is Assassin's Creed Valhalla the most successful Assassin's Creed launch in history, it is also the company's biggest PC game launch ever:

Building on favorable review scores and early player response, Assassin’s Creed Valhalla has sold through more units in its first week than any other Assassin’s Creed game sold during the same period. Assassin’s Creed Valhalla also has become the top-selling Ubisoft PC launch ever, driven by all-time record Ubisoft Store sales performance. With strong feedback from players on next-gen consoles, Assassin’s Creed Valhalla is delivering on its promise to make the most of the new hardware.

“We are truly delighted by the enthusiastic response from players and want to thank the fans for their incredible support. Delivering this game amid a global pandemic was a true tour de force by our teams and it’s fantastic to see players enjoying the game so much,” said Julien Laferrière, producer on Assassin’s Creed Valhalla. “Launch is only the beginning and we have robust content plans for Assassin’s Creed Valhalla that will keep players immersed in their epic Viking saga for a long time to come.”

Players are already well into their adventure in Assassin’s Creed Valhalla, covering more than 4 million kilometers, building their settlements (over 55 million buildings already unlocked since launch) and becoming fully immersed in the Norse and Saxon culture through the Orlog dice games (over 3.5 million games of Orlog have been won so far) or even enjoying the drinking and flyting contests (over 1.8 million players have won at least one drinking game since launch).