These are the following cheat codes, which I don't bother to use due to the fact I'm so good that I can clear labyrinths in under 5 minutes and the entire quest within 2 hours or less without those codes.
Game Genie Codes
Out of those codes, I recommend #1, #4 and #6. If you continue a saved game, these codes must be reentered.
(from LinksWorlds.com; site appears to be defunct)
AAIZZI-Infinite money
AEEAEE-All enemies in game turn into falling rocks
AAPVEX-Start game at the top left corner of map
(
from webrafa.com
)
NSKUILTA Infinite energy
SXPAPO Some enemies can't move
SXYAPO Walk up a screen, and you can walk all over at the top.
NYAZPA Everything except you and the enemies are black, even your hearts.
YGAEXP Enemies in shop, enemies in top corner outside and some enemies are
stuck in the Laburnums
PPLXZZ Touch wall and a ghost will appear
PPEEAA Brings up castle subscreen at all times
VVTTSP Puts you on beginning screen
POZXXU Walk around and fire sword, you will get stuff on location--?
AAIZZI Infinite money--?
AEEAEE all enemies in game are falling rocks
AAPVEX Start game at the top left corner of map
AAANAA Walk through walls in castles. Use the whistle to get to a castle.
AAPNLO Walk through walls, trees, and water in the overworld. Don't enter
caves; if you do you will not be able to get out.
OSTLLY Press the B button to use weapons you do not have. When using this
code you must have no weapons. You may have to press the B button several
times.
AKITVX Forms new entrance when you leave a cave
EENAKP Different stuff in caves
KTVXXZ Secret entrances are open. (you can't kill the snake in the last
level with this code)
XYYYYL Meat comes out of shooting sword
KIOZXX Rooms are split in half, you might be able to find things, like Hearts.
SZZVVZ Link is different colors
PPZXYY Change castle
XXLLLZ Rapid B button is on, walk through some enemies
IZLZZZ Wall changes into rock man when you touch it
OPPEEA Speed writing
PPEEAA Brings up castle subscreen at all times
These following codes with "--o" next to it means it will only work with the old version of Zelda. You can tell if you have an old version when you die and it says Continue, Save, Retry and nothing else. If you have the new version it will also have a red box that says Hold in the Reset button when you turn off the power. If there is an "?" next to the code, the code has not been tested on both versions of the game.
AIIOOV Start with 24 bombs--o
TIIOOV Start with the potion--o
YIIOOV Start with the wand--o
IIIOOV Start with the meat--o
GIIOOV Start with the whistle--o
LIIOOV Start with a green candle--o
ZIIOOV Start with the bow--o
PIIOOV Start with a very strong arrow. (This arrow can't kill Ganon so of
you want to pass the game don't use this code)--o
TTIOOV Start with 24 keys--o
ITIOOV Start with 24 coins--o
IYIOOV Money goes up once in a while--o
VXXTSS Walk when you usually can't--o
from Col. G. L. Sicherman
AEOANAEG Fewer monsters.
AEVATVAA No zolas.
AOEUYTEY No darkened rooms.
ZAVEIVXY Blue ring costs 2 rupies.
ZPOPTLYO Link has green hair in overworld.
TLOEKYAK Play one note flat in overworld.
SLKEUVSY Armos Statue has 6 spots on shield.
KUOZSPKK Change trees into gravestones.
ATOXPYGN Fill dungeons with sand.
from Zelda Element
use the following codes only on the first version of the game. the first version of the game does not have the "hit reset key when turning off the power" in the menu that gives option to continue/save/reset.
AIIOOV Start with 24 bombs
TIIOOV Start with the potion
YIIOOV Start with the wand
IIIOOV Start with the meat
GIIOOV Start with the whistle
LIIOOV Start with the green candle
ZIIOOV start with the bow
PIIOOV start with a very strong arrow (cannot kill Gannon)
TTIOOV start with 24 keys
ITIOOV start with 24 coins
IYIOOV start with 24 bombs
the following codes may be used on both versions
SXPAPO Some enemies can't move
SXYAPO Walk over top of screen
NYAZPA Everything is black except Link and enemies
YGAEXP Enemies in shop and on scenery
PPLXZZ Touch a wall and a ghost will appear
PPEEAA Bring up castle subscreen all the time
VVTTSP puts you on beginning screen
AAIZZI infinite money
AEEAEE all enemies in game are falling rocks
AAPVEX start game in top left corner of map
AAANAA walk through walls in castles
AAPNLO walk through scenery. don't enter caves
OSTLLY B cycles through weapons that you don't have
AKITVX forms new entrance when you leave a cave
EENAKP different stuff in caves
KTVXXZ secret entrances are open
XYYYYL meat comes out of shooting sword
KIOZXX rooms are split in half
SZZVVZ Link is in different colors
PPZXYY change castle
IZLZZZ wall changes into rock man when you touch it
OPPEEA speed writing