You are under attack by vikings, who want to take over your land. Use your magical spells to survive and defeat the fearsome enemies. In order to play this game, make sure you attack the enemy by collecting combos. To do so, click on the same colored wizards standing near each other. Each combo will increase the damage to the enemy, but make sure it doesn't take too long to make a combo or you'll lose your power. As you play along, you can always check, in the upper part of the screen the gold you have collected and the power bar. After each level, you get a report on you performance, with the time, defeated vikings and ships and the collected gold. Also, you can use your gold to upgrade your skills, such as increase the maximum of your power, the amount of towers or the amount of gold taken from the Vikings. Good luck!