That, in short, is your own task in the game, to become Britain’s ruler.
For the first time in 80 years of Viking raids, the territories enjoyed a measure of peace. He converted the Viking leader Guthrum to Christianity, and then he used the Vikings as allies to become the dominant ruler in England. While Alfred the Great won, he subsequently made a deal with them.
Before Given showed me the game, he gave a history lesson about the Viking invaders.