Arthur the brave knight must rescue his beloved Princess from the Demon King Astaroth and his forces – amongst them are the various undead (ghosts, zombies), bats, ogres and goblins. Other challenges include moving platforms, ladders and water/fire hazards.
The player can walk left and right, jump, and is also equipped with a lance to use as a weapon. Getting hit by enemies causes Arthur to lose his armor and run around in his underpants, getting hit again will cause the player to lose a life. As in most games in this genre, the player can pick up power-ups such as daggers and bombs during the course of the game, giving the player greater firepower.