Defend your fortress against fierce undead viking warriors in this thrilling tower defense game! Strategy and quick thinking will be your greatest weapons as you place and upgrade medieval-style towers across multiple Hardknut locations. Earn valuable rewards for each victory that let you customize your fortress defenses even further. Face epic challenges as you fight to conquer wave after wave of relentless undead warriors who refuse to give up! Will you become the great fortress guardian who holds out against all odds?