In 878: Vikings - Invasions of England, players control the invading Vikings or the English nobles who are trying to withstand the invasion. Viking players either play as Norsemen Viking freeman or as the fearless Viking shock troops known as Berserkers. The English play as the Housecarl, the Kings' household troops, or as the Thegns who were regional noble Leaders. The English players will also be able to call up the peasant levies, called the Fyrd, to defend their cities.
Players for each side strategize together in order to coordinate their strategies. Each side attempts to control Cities on the map to win. The English start the game controlling all of England but a Viking Leader will invade from the sea each Turn. The English players raise reinforcements from cities they control, while the Vikings must wait for a new invasion for reinforcements. The game ends when the Treaty of Wedmore is called and the side controlling the most cities wins the game.