The Legend of Zelda: Ocarina of Time Master Quest is not only the game with the longest name in the Zelda series, but also an alternative version of The Legend of Zelda: Ocarina of Time. It has the same storyline as the original game, but it also includes some new dungeons and a better AI. Don't expect new enemies, but prepare yourself for tougher challenges than those that you had to face in Ocarina of Time. You'll be solving puzzles, but keep in mind that the room layouts are different and now you'll have to defeat all the enemies in a room in order to be allowed to enter the next one. Here's what you can unlock while playing the game:

Unlockables

Skulltulla Token Rewards
You must hunt down every Skulltula token in the game to collect prizes. Talk to the cursed family in Kakariko Village to obtain your prize.

Adult Wallet - Find 10 Skulltula Tokens

Bombchus - Find 40 Skulltula Tokens

Giant's Wallet - Find 30 Skulltula Tokens

Huge Rupee - Find 100 Skulltula Tokens

Piece of Heart - Find 50 Skulltula Tokens

Stone of Agony - Find 20 Skulltula Tokens

Easter Eggs.

BIG RED RUPEE!
After you gain the Master Sword and become adult Link, go to the lost woods and take a left to the skull kid. He will attack you because you are now an adult, so attack back with regular sword attack. Do not use anything strong and dodge his attacks, if you die or use any strong attacks, he will backflip out of there. Once defeated, he will leave a very large red rupee behind, which is bigger in width and height then Link in his adulthood.

Hidden Bowser broach
If you look at the broach that Malon is wearing, you will notice that it is actually Bowser's face.

Hidden Nintendo characters in Hyrule Castle courtyard.
When you enter the Hyrule Castle courtyard, look at the right window. If you look inside the window, you will see paintings of Mario, Peach, Yoshi, Luigi, and Bowser.

The Bald Fisherman
As a grown up, when you catch the fisherman's hat. He will get mad at you, but from then on whenever you see him he will be bald, without his hat. This can be very hard, and is usually best if you stand about where the sign is, and then just keep trying to catch it

Glitches

Unlimited Bottles
Assign a bottle to any button. Swing the bottle at a bug/fairy/fish. Before you catch the bug/fairy/fish, equip an item you don't need to the button of the bottle. The item will be transformed into a bottle, and will never return to its original state.

Warning: Do not replace items required for gameplay with a bottle, for you cannot get it back. Replace items such as Masks, or the Trade Item after you complete the trade.

Unlimited Gold Skulltula Tokens
First, you must be young link and already have bombs, the boomerang, and the Song of Storms. Then go to Hyrule castle, sneak past the guards, and go by the tree next to entrance of the castle (it's past the moat). Play the Song of Storms and a hole will open appear in the ground. Go into the hole and you'll see three bombable walls. One of these has a gold skulltula inside. You must kill the Gold Skulltula, then stand in front of the circle pad that transports you back up. Now, throw your Boomerang at the token and as soon as it hits the token step back on the pad (before the boomerang comes back to you). You will be transported back to the surface with a new Gold Skulltula token. The Gold Skulltula should reappear down in the hole if you did this right, so now you can easily get 100 tokens!

Secrets

Free faeries
Stand in front of one of those "one eyed stones" that tell the time when you hit them. Play any non-teleporting song for two free faeries.

Get the golden scale as a kid!
When you are a child, go to the fishing pond and start fishing like normal. Keep fishing until you get a fish that’s big enough to earn a heart piece. Instead of going to the fishing owner, go into the middle of the pond. Face towards the owner in the water and hold Z + L (lock and shield). Don’t let go and swim and run to him. Once you reach him, talk to him without letting go of Z and L. He’ll give you the golden scale instead of a heart piece!

This allows you to do many things early on. Such as entering Zora’s Domain without having to play Zelda’s Lullaby. Or getting the heart piece from the Lakeside Laboratory (letting you have both the scale and heart piece.)

Infinite Lon Lon Ranch Milk
To get infinite Lon Lon Ranch Milk, simply play the Epona's Song in front of a cow. Every time you play it, you will get you bottle filled with Lon Lon Ranch Milk. You can do this as many times as you want.

Here's the ending movie:



Infinite Money at Will
In the past, there is a beggar in the Hyrule Castle Market that asks you to sell him things with C. In the future, that same beggar is relocated to Kakariko Village, which is perfect for arguably the fastest non-Skulltulla money trick in the game.

Behind the old lady's potion shop in Kakariko lies a grotto, and within it, a fish. Bring a bunch of empty bottles to the grotto, then enter and re-enter the grotto until you're able to fill all of your bottles with fish. The beggar will buy each fish for 100 rupees, and you can repeat this process as many times as you wish until your money is maxed out. This obviously works best when you have the Giant's Wallet and are able to carry a maximum of 500 rupees at a time.

Sinking Lure
If you want to easily catch really big fish in the fishing pond without having to spend countless hours, then make sure you have caught the fish as an adult and have obtained the gold scale. Now go to the fishing pond and you will find a new lure in one of three places:
1.) in the feeder creek, 2.) in the grass around the perimeter of the area, or 3.) on the log jutting out of the pond. Once you find this lure, try fishing with it. It is irresistible to fish, so catching a 20 pounder will be no problem. However, if you set any records by using this lure, the fish you have caught will be noted as illegal on the aquarium and at the record board in Link's house.

Three Free Fairies
As Kid Link, go to a soft soil spot, and play the Song of Storms. Three fairies will appear.

Turn a Gossip Stone into a rocket.
Place a bomb near a Gossip Stone. The blast will turn it into a rocket, which will launch after a brief countdown.