Final Fantasy 7

Access the Ancient Forest Early  As soon as you breed a Green Chocobo, fly it over to the grassy area near the Ancient Forest. Ride it over the mountains and dismount it in the grass just beside the Ancient Forest. You may now enter. 
Add Vincent To Party Enter Vincent's Room in the Nibelheim Mansion basement using the key from the safe upstairs. Talk to Vincent. He'll tell you to go away when he's done talking to you. Go back to his coffin and keep trying to talk to him until he won't open the lid anymore. Then, try to leave the mansion. He will come after you and join your party. 
Add Yuffie To Party You need to get into a battle with Yuffie in order to get her to join your party. You can find her in a random battle while travelling through the forested area near Gongaga. After beating her in battle you will have to respond to a few questions from her. You MUST respond correctly to all of them in order to have her join your party. The responses are:

"not interested"
(then speak to her again)
"...petrified"
"Wait a second!"
"That's right."
"Let's hurry on."

Breed Black Chocobo  Breed a Blue chocobo and a Green chocobo of opposite gender. Feed them greens and race them up to S Class at the Gold Saucer. Return to the stable and mate them using a Carob Nut. The offspring should be a Black Chocobo. 
Breed Gold Chocobo Breed a Black chocobo and capture a "Wonderful" chocobo of opposite gender. Feed them greens and race them up to S Class at the Gold Saucer. Return to the stable and mate them using a Zeio Nut. The offspring should be a Gold Chocobo. 
Breed Green/Blue Chocobo  Capture a "Good" male chocobo and a "Great" female chocobo of opposite gender. Feed them greens and race them up to A Class at the Gold Saucer. Return to the stable and mate them using the Carob Nut. The offspring should be either a Green or a Blue chocobo. 
Chocobo Racing Mega Prize Win 10 races in the S Class to receive a special package prize from Ester. 
Chocobo Racing Stamina Hold down R1 and R2 while racing to refill your stamina meter. 
Chocobo Racing Starting Jump  Hold down the Square button as you start a chocobo race to jump off of the line. 
Duplicate Items You need to have already obtained the W-Item materia and have it equipped to one of your party members for this to work. Get into a battle and use the character with W-Item equipped. Choose "W-Item" and find the item you would like to duplicate. Press O to choose the item, then O again to assign it to be given to a character (or enemy). Press O one more time to choose the item again, but instead of assigning it to a character (or enemy), press X once to cancel. This will raise the quantity of this item by one. Keep pressing O (to choose) then X (to cancel) over and over to keep raising the quantity of this item in your inventory. Obviously this will only work with items that are usable in battle. 
Extra Mega-All Materia When going down into the Northern Cave you will reach a point where you are asked to send party members either left or right. Make sure to send Vincent to the left and Yuffie to the right. Send everyone else wherever you want. When you meet up with Vincent at the bottom, he'll have a Mega-All Materia. Plus, when you take the left path, there will be a Mega-All for you to pick up. 
Find "HP-MP" Materia  After breeding a Black Chocobo, fly him over to the cave just North of North Corel. You'll have to land the airship on the other side of the river. Ride the chocobo over the river and up the rocky area to get to the cave. Go inside to find the HP-MP materia. 
Find "Knights of the Round" Materia After breeding a Gold Chocobo, ride it to the Northeast corner of the world map. You'll find and forest island, surrounded by mountain. Ride the chocobo into the forest, dismount and enter the cave. Inside you'll find the coveted Knights of the Round materia. 
Find "Mime" Materia After breeding a Green Chocobo, fly him over to the Western continent (with Wutai on it). Land in a grassy area and ride over the mountains in the center of the continent to find a cave along the Eastern coast. Go inside the cave to find the Quadra Magic Materia. 
Find "Quadra Magic" Materia  After breeding a Blue Chocobo, fly him over to Mideel and land in the grassy area. Ride him North along the coast to find a long, thin island with a cave at one end (just Northeast of Mideel). Go inside the cave to find the Quadra Magic Materia. 
Find a "Good" Male Chocobo Find the tracks just Southeast of the Gold Saucer Desert. The "Good" chocobo will be accompanied by either a single Spencer enemy or two Spencer enemies. 
Find a "Great" Female Chocobo Find the tracks near Mideel. The "Great" chocobo will be accompanied by either a single Spiral enemy or two Spiral enemies. 
Find a "Wonderful" Chocobo Find the tracks on the Northern Continent (the snowy one). The "Wonderful" chocobo will be accompanied by either a single rabbit type enemy or two rabbit type enemies. 
Key to Vincent's Room (Nibelheim) Get the key to Vincent's room in the basement of Nibelheim by opening the safe on the second floor. The combination to the safe is, right to 36, left to 10, right to 59, right to 97. 
Obtain Carob Nut Find Vlakorados (a red dragon/dinosaur) in the grassy area just South of Bone Village. You can steal a Carob Nut from him during battle. 
Obtain Zeio Nut Find Goblin Island, a small island with a forest in the middle, located in the Northeast part of the world map. Get into a random battle with a goblin in the forest. Defeat him to get the Zeio Nut. 
Slow Down The Slots In the battle square when the slot machine is going around to pick your handicap tap Square really fast and the slot will slow down.


How about the Gameshark Codes???
Infinite HP&MP All Characters  8009c764 270f
8009c768 03e7
8009c7e8 270f
8009c7ec 03e7
8009c86c 270f
8009c870 03e7
8009c974 270f
8009c978 03e7
8009cb00 270f
8009cb04 03e7
8009ca7c 270f
8009ca80 03e7
8009c8f0 270f
8009c8f4 03e7
8009cb84 270f
8009cb88 03e7
8009c9f8 270f
8009c9fe 03e7

Infinite Chocobo Stamina While Racing  800B7634 270F

Cloud: Infinite HP  8009C764 270F

Cloud: Max HP  8009C766 270F


Cloud: Infinite MP  8009C768 03E7

Cloud: Max MP  8009C76A 03E7

Cloud: All Limit Attacks  8009C75A 02DB

Ultimate Code  With this code, it makes you invincible and you press L1+L2+Square to fill up your limit break. 300f83e30001
300f844b0001
300f84b30001
d0062d780085
800f5e6A00ff
d0062d780085
800f5e9e00ff
d0062d780085
800f5ed200ff

Have all items  500069020001
8009cbe0c600
5000c0020001
8009cCb2c680

Cloud's Ultima Weapon  8009cc88008f

999999 AP After Ever Battle  8009d7dce0ff
8009d7de05f5

Raise Aries from the Dead (Disc 2, 3)  8009cbdeff03

Stable 1 Color  300934B70004

Quick Limit Bar Gain In Battle  d00a14505e68
800a145000ff
d00a14529422
800a14522402
Debug Mode  8009a05c0041
8009abf60041
Infinite Gil  8009d260ffff
Quick Level Gain  8009d7d8ffff
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