Viking Age is a 5-reel slot with 30 paylines and three unique bonus features, including a free spins round and a bonus game round. The free spins round is triggered if you get at least three Amma, the red haired Viking girl, symbols.
These are multiplier free spins, where, in your win on the payline with a matching start and end multiplier, is doubled by that multiplier. The higher the number of Amma symbols you get, the higher the number of free spins you get. The highest multiplier is 5 times the wager on the winning payline.
If you get three or more Viking helmet symbols, you get a "click me" type of bonus. In this, Amma leads you to three runestone doors, and you have to select one to win a reward.