Assassin's Creed Valhalla is developed by Ubisoft Montreal, with support from Ubisoft Sofia, Ubisoft Singapore, Ubisoft Montpellier Ubisoft Barcelona, Ubisoft Kyiv, Ubisoft Bordeaux, Ubisoft Shanghai, Ubisoft Chengdu, Ubisoft Philippines, Ubisoft Quebec, Ubisoft Bucharest, Ubisoft Pune. Additional help was also provided by Sperasoft.
The game casts players as Eivor, a "fierce Viking raider raised on tales of battle and glory." Eivor, who can be male or female, leads a group of Norsemen that have been driven from Norway by "endless wars and dwindling resources in the ninth century CE."