Viking Madness Vikings were Norsemen who during the late 8th to 11th Centuries raided and traded. This super slot takes us back to the Viking era to see the Madness that went on. Get comfortable as you play this heavy feature slot with several ways to trigger, like: Free Spins, sticky wilds and the big catch. Be careful though...the giants can dominate the reels with our new feature Battle of Giants. They're going to get Mad!