Photon: The Ultimate Game on Planet Earth/Gameplay

Controls

 * : Use the direction pad to guide the player through the dungeon. Press up to walk forward in your current direction.  Press down to walk towards the "camera", and press left and right to walk in either direction.
 * : Press the A button to fire your weapon straight up. The A button also accepts selections on the menu screen, and allows your player to rise in colored zones if you have the corresponding colored stone.
 * : The B button is used to cancel your selection on a menu screen, and it is used to descend in colored zones if you have the corresponding colored stone.
 * : Press Start to begin a new game, or to pause the action mid-game.
 * : Press Select to pause the game and call up the menu screen where you may use items and get passwords.

Player
You control the player in his quest to escape the dungeon. He is limited to one weapon, his Photon Light Pistol, and he is only able to fire it upward. He has a health meter which is displayed at the top of the screen throughout the game. At the start of the game, the maximum value that your health can reach is 1000, but certain items can increase this number. Lost health is regained by destroying enemies, most of which die in one hit. Health is lost by touching enemies or getting hit by their projectiles. If his health meter drops to zero, he will die and the game will be over.

In order to make his way through the dungeon, it is necessary to collect three colored stones. Throughout the dungeon are shafts that connect various floors. These shafts are coded red, green, and yellow. If the player does not possess the corresponding color stone, he will drop to the bottom of the shaft. If he does possess the right color stone, he will be able to move up and down the shaft at his discretion.

As the player, your primary challenge is to make your way through the labyrinth-like floors, and avoid getting lost as you proceed. Additionally, some passages are obscured from your view by fake walls, so you must learn how to properly identify such walls. If you intend to play through the game without using the provided walkthrough, it is important that you map your progress and keep a record of which passageways you have explored, and which ones you have yet to examine.

Disk Messages
Each of the 12 disks contains a message which is designed to help you in your quest to escape from the dungeon. Reading these disks can reveal spoilers on solutions to some of the puzzles. Expand the spoiler below only if you wish to read these messages ahead of time. {{spoiler|title=All 12 Disk Messages|content= }}
 * Disk 1: イノチ　ガ　オシクバ　ヒキカエセ (Turn back if you value your life.)
 * Disk 2: テレポーター　ヲ ミツケタラ　マーカー　ヲ　サガセ (When you find a Teleporter, look for the Marker.)
 * Disk 3: ユレル　ユカ　ヲ　トメロ　ヒガシ　ニ　6　ミナミ　ニ　4 (Stop the unstable floor from shaking. Go 6 East and 4 South.)
 * Disk 4: マヤカシノ　ユカ　ニ　キヲツケロ (Be careful on the false floor.)
 * Disk 5: マボロシノ　カベ　ニ　マドワサレルナ (Don't let the illusion wall confuse you.)
 * Disk 6: ダクラ　ノ　ボスハ メ　ヲ　ネラエ (Aim for the eye of the Dakura boss.)
 * Disk 7: Ｚ=９　ニ　カクサレタル　コベヤ　ヲ　ミツケタカ (Have you found the small hidden room of Floor 9?)
 * Disk 8: ストーン　ヲ　サガシ　タテ　ノ　ツウロヲ　イドウセヨ (Find the stone to move up the passageway.)
 * Disk 9: グリーン　ノ　ストーン ハ　オトシアナ　ノ　ナカ ニアル (The Green Stone is in the pitfall.)
 * Disk 10: ツウロ　ノ　ワナ　ヲ　トメタクバ　トナリノ　ヘヤヘ　ユケ (After you disarm the trap in the passageway, go to the room beside it.)
 * Disk 11: コベヤ　ヲ　ヌケルニハ テキヲ　タオセ (Defeat the enemy to escape the room.)
 * Disk 12: フォトニアン　ニ　エイコウアレ (Glory to the Photonian!)
 * }