Fight the undead viking warriors and upgrade your defenses. Use the rewards you get for victories to your advantage. Hold out for as long as you can! Defend your forts! Endless 18 magic cards 4 upgradeable powers 4 card spells Upgrade your defense towers and gain coins and gems for defeating enemies. Pick out of three cards every two levels and choose which power-ups will help you best. Last as long as you can in an infinite gameplay.