Which Assassin's Creed game is set primarily during the Viking invasion of England?

Assassin's Creed Valhalla is set primarily during the Viking invasion and settlement of England.

The game begins in Norway and follows Eivor, a Viking who leads a Norse clan to England in the ninth century. Eivor establishes a settlement in England and forms alliances with several Anglo-Saxon kingdoms while becoming involved in the conflict between the Hidden Ones and the Order of the Ancients.

Valhalla draws on the historical context of the Great Heathen Army and the political struggles among rulers such as Alfred the Great. Its version of history combines documented people and events with the series' fictional Isu mythology and memory technology. Norway remains important, and later downloadable content visits other regions, but England is the principal setting of the main campaign. The game was released after Odyssey and before Mirage.