Defend the watchtower on the borders of the kingdom from the hordes of the undead. Crowds of skeletons, orcs and bats will try to break your spirit. Well, let them near the fortress walls, firing from a crossbow. You can also call a fiery rain on the heads of enemies, which will sweep them from the battlefield. Pass levels and earn coins to improve the level of weapons and the degree of protection of the tower from more serious opponents.