The Blue Crystal Rod

The Tower of Druaga is an action role-playing maze video game. Controlling the knight Gilgamesh, the player must scale all 60 floors of the tower to rescue the maiden Ki from Druaga, an eight-armed and four-legged demon who plans to use an artifact called the Blue Crystal Rod to enslave mankind. Gilgamesh will need to locate a key on each floor in order to open a door, allowing him to proceed to the next floor. Each floor contains enemies that Gilgamesh may need to defeat to progress, such as slimes, knights, projectile-firing wizards, ghosts that can travel through walls and fire-spewing dragons. Gilgamesh can defeat these enemies by hitting them with a sword — some will require multiple hits to defeat. Gilgamesh can also block a projectile by facing it with his shield. Each floor also has a hidden item that can be uncovered by completing tasks, such as defeating a certain number of enemies or inputting a specific code with the joystick. These items include a pickaxe that can destroy walls, boots that will drastically increase Gilgamesh's walking speed, and a candle that can reveal ghosts. Some of these items are required to fully beat the game, and failing to do so will either cause the player to die or make the game unwinnable. A time limit is also present on each floor, and should the player take too long, two indestructible spherical enemies named "Will-o-Wisps" will charge towards Gilgamesh. Should the player forget to get a required item, they will instead be sent back, or "zapped", to an earlier floor to retrieve it. The game's mazes are randomized in each playthrough, although the treasure will appear at the player's starting point.