The Legend of Zelda: A Link to the Past Cheats

In the Dark World, go and stand EXACTLY where the mushroom is in the Light world(Somewhere in the Skull Dungeon). When you use the Magic Mirror to go back to the Light World,not only will you get the Mushroom but the trees will be glitched and you'll be able to fight some of the monsters that are only in the Dark World! When you leave the forest, everything will go back to normal.

Anytime you have the Hookshot equipped, if any enemy or projectile comes to attack you, use the Hookshot, and while the Hookshot is extended, the attack will go right through you, and you will take no damage.

Death Mountain Descent will allow you to explore all of Dark World without obtaining the third pendant, the Master Sword, or defeating Agahnim.

First, you'll want to get the Moon Pearl out of the Tower of Hera. That's necessary unless you want to stay as a bunny the entire time. Once you've acquired it, exit the dungeon. Now hop in the teleporter just outside the Tower of Hera and go to Dark World. Hop down the cliff, and make your way to the right. Go to where the broken bridge used to be in Light World.

Now stand right under the top statue, as far against the wall and statue as you can get. Mirror to Light World. This is the tricky part, you must move ONE PIXEL to the right. No more, no less. If you don't do it correctly, you have to start all over. After you've moved, wait until you get teleported back to Dark World. You should be ONE PIXEL closer to the ledge now. Now DON'T MOVE! If you move, you will have to start over again. Mirror back to Light World.

Now walk to the right until you're stopped by the bridge post. Wait until you stop flashing, and hold down the B button until your sword charges up, while still facing right. SLOWLY move backwards into the sparkly teleporter. If you don't do this slow enough, the trick won't work. When you teleport, if you don't get teleported back to Light World, you did the trick correctly. Now press right to jump off the cliff into the black stuff. Make your way around the black stuff and to the bottom of the screen.

Go down one screen and you'll be on top of a cliff in Dark World. Hop off the cliff and you're now allowed to explore Dark World! If everything is glitchy, enter a cave, then exit and things will be normal looking.