The Tower of Druaga (PC Engine)/Gameplay

Controls

 * [[File:Tg16-Dpad-Neutral.png]]: Use the Dpad to navigate through the menus, and to direct Gil throughout the tower. Gil can move in any of the four cardinal directions, and not diagonally.
 * [[File:Tg16-Button-I.png]]: Press the I button to accept menu selections, and to have Gil draw his sword. Gil will keep his sword drawn for as long as the I button is held down.  During this time, his shield moves from his front side to his left, so it is still capable of blocking spells, but only if they come from his left.  If you press Button I while facing a wall and not moving, you will use the Pickax (assuming you still have Pickax uses left). Using a Pickax on the outer wall will ruin the Pickax for the remainder of that floor.  Pressing the I button on the item selection screen toggles the II button item selection.
 * [[File:Tg16-Button-II.png]]: Press the II button to cancel menu selections, and to activate the item that you have assigned to the II button on the item selection screen. If the item is a consumable, it will reduce the count of available uses by one, or remove the item from Gil's inventory.  By pressing the II button when Ishtar presents a hint for the next floor, you are taken to the point allocation screen.
 * [[File:Tg16-Button-Run.png]]: Press Run to start the game and to pause the game during gameplay. Press and hold Run, and then press Select to return to the title screen.  This is a good way to use a continue to go back to a floor where you might have missed a vital treasure chest.
 * [[File:Tg16-Button-Select.png]]: From the main gameplay screen, press Select once to enter the item selection screen where you can equip the various pieces of armor that you have collected and assign an item for use with button II. Press Select once more to be taken to the point allocation screen, although you are not allowed to reallocate points in the middle of game play.  This may only be done before each floor begins.

Gil
Gil is the destined hero of this game. He has been charged by the goddess Ishtar to ascend the Tower of Druaga and rescue the maiden Ki from the demon Druaga. Not only must Gil use his sword and shield to navigate through the labyrinthine floors of the tower, he must use his wit and memory to reveal the locations of the treasures contained on each floor, some of which are absolutely necessary for Gil's success. Gil is patterned after the Gilgamesh of Sumerian legend.

Ki
The maiden Ki is actually a priestess in her own right. When Druaga assumed possession of the tower, Ki attempted to climb to the top in an effort to stop Druaga from stealing the Blue Crystal Rod. But she was captured by Druaga and is now held prisoner. Ki goes on to be a tremendous asset in Gil's future adventures, but first she must be rescued from Druaga's grasp.

Ishtar
Ishtar, unable to meddle directly in the affairs of mortals on earth, can only sit and watch as Gil answers her call to service. But she provides Gil with valuable information in the form of clues that can help Gil reveal the treasure chests on each floor (on the Easy, Normal, and Hard difficulties. Even Ishtar is unaware of the reveal methods for the Pro Game.)

Druaga
Just before the Sumerian Tower could be completely destroyed, the evil demon Druaga moved into the Tower and restored it for use as his striking point against the gods. His goal is to lay claim to the Blue Crystal Rod by stealing it from the heavens and use it to enslave humanity.

Game Difficulties
The game can be played on any of four difficulties. The differences are described in the table below.

Floor Features
Each of the 60 floors of the Tower appear similar to one another and differ only in layout and monster content.

Keys, Doors, and Walls
In order to escape each floor, Gil must find and collect the key, and bring it to the locked door in order to open it and discover the stairwell to the next floor. The key will be in plain sight until a particular floor is reached. At that time, the key will be invisible, but still obtainable. The silver chime can alert Gil when he is facing the key at the very beginning of the level, but to truly see the keys after they go invisible, Gil must possess and activate (just once) the Book of Keys. The location of the door will never be hidden.

Walls play an important role in The Tower of Druaga as well. They can be used strategically in your defense, or destroyed to give you faster access to a monster or an item. Walls can be destroyed by using the Pickax. To use the Pickax, face a wall, and press Button I without moving. If you have Pickax uses remaining, you will use one up and the wall will be destroyed. If you attempt to use the Pickax on any of the outer walls, the Pickax will be broken for the remainder of the floor. However, you will get all of your Pickax uses back on the next floor. Be aware that dragons and a few other enemies can destroy walls as well.

Treasure
Most, but not all, of the floors contain a hidden treasure chest that can only be revealed by completing a certain task. The methods for obtaining the treasure are the same in the Easy, Normal, and Hard difficulties, and Ishtar will start each floor by providing you with a hint or a clue for discovering that floor's reveal method. Sometimes the method requires the killing of all or certain monsters. Sometimes an item must be used. Use your imagination when you are stumped. Most of the items that Gil collects from the treasure chests are required in order to successfully defeat Druaga and rescue Ki, so try not to miss any of the chests. The reveal methods for the Pro Game are entirely different, and Ishtar will not provide you with any clues for the methods, so you will have to discover them on your own. Your efforts will go smoother if you are familiar with some of the reveal methods used in the original arcade game.

Some floors may even contain a second optional treasure chest that can be revealed, but unlike the first chest, it will usually be a consumable support item, and will never be critical to the success of Gil's mission (the Pro Game does not contain any secondary chests.) All treasures must be equipped or selected through the equipment screen by pressing Select during gameplay.

Monsters & Magic Circles
Each floor contains a predetermined set of monsters that can be fought, or evaded. Some monsters (such as bats) can not be defeated by Gil and must simply be avoided. Some of the monsters cause instant death for Gil while other drain Gil's Hit Points over time. Learn which monsters can be fought and which must be avoided early on for success in the more difficult floors later.

Some floors have anywhere from 5 to 9 magic circles painted on the floors. Sometimes these magic circles have various properties, and sometimes they are simply for illustration. Sometimes they even figure into the reveal method for the floor, so pay attention to the clues that Ishtar provides.

Spirit Crystals
Spirit Crystals can only be collected on the floor in the Normal Difficulty. You are automatically awarded one Spirit Crystal for beating each floor in the Easy game, and they can not be obtained at all on the Hard or Pro game. Spirit Crystals only occur on the first 24 floors of the Normal game. Initially, they are collected simply by touching them. Later on the method requires a little more effort, as the crystal may roam the hallways and must be caught, or warp from point to point around the floor, or in some cases it must be touched three times in order to possess it. Once gained, spirit points are used to augment one of Gil's six different attributes: Total Health, Offensive Power, Defensive Power, Sword Speed, Walking Speed, and Pickax uses. The points distributed to each attribute are awarded above and beyond what Gil's current equipment set up provides him with, up to a maximum value of 20 per attribute. Points are distributed on the status screen (press Select on the Equipment screen, or press Button II when Ishtar is giving you the hint for the floor.)  Points can only be distributed on Easy and Normal Difficulty.

Items
The follow tables illustrate what items can be collected throughout the various floors of the tower. You begin the game with very basic equipment. All subsequent equipment offers defensive or offensive improvements over the original items (with the exception of Evil items).