The Pening (plural; peningas) is the currency of Viking Conquest.
"Pening" is the Old English word for "penny". The similarly-named pennings were used in Norway and Sweden at the same time and were modeled after the English penny. During the time period of Viking Conquest, pennies were thin silver coins weighing around 1-1.7 grams.
Like other games, the pening is the main currency of Viking Conquest and is earned through many already known but new ways.