Easy Key to Sector 5:
Instead of going through all of the digging to find the "Key to Sector 5" on the top level of the Bone Village, go to the village in Disc 3. There should be an X on the ground in front of the ladder to the second level. Talk to the man and dig for normal treasure in the exact center of the X three times. The first time you should get Cid's mop, the second time you should get W-Summon, and the third time you should get the Key to Sector 5.

Bahamnant ZERO Summon Materia details:
Walk around after boarding the Shinra No. 26 spaceship on disc two. Your party will be able to go down to the space pod or up the ladder to the right to the huge materia. Go to the huge materia and use the talk button at the tall glass to speak with Cid. He will explain the controls in this part of the game. Talk again at the case and enter the password Circle, Square, X, X to collect the Key Item "Huge Materia". After travelling to Cosmo Canyon later in the game, talk to Bugenhagen. He will take your party up to his observatory. Approach to the Blue huge materia and get closer. Your party will receive the Bahamnant ZERO summon materia.

Sense without wasting a turn:
Press Select to display a window above the time bars, then sense the enemy. From this point on whenever you attack that enemy while selecting, look in that window to see its current HP and name. Note: This only works during the current battle.

Avoid back attack:
When surprised with a back attack, try running away to automatically turn around (hold L1 + R1).

Huge Materia from Cid's Rocket:
The code to get the Huge Materia from Cid's rocket is Circle, Square X, X. Note: If you do not get the code, restart and retry from a saved game.

Maneuvering the Highwind:
The Highwind can be turned sideways or flown backwards without turning around. Hold Square and press the D-pad in the desired direction while flying.

Instead of pressing Square + D-pad to fly the Highwind, press Circle to go forward. Press R1 or L1 to turn sharper.

Cosmo Canyon song:
You can play the Cosmo Canyon song on your own by going to Tifa's house in Nibelheim. Then, press Square, Square, Square, X, Square, Circle, Circle, R1 + X, Circle, R1 + Square, R1 + Square, R1 + Square, R1 + X, Circle, R1 + X, R1 + Square, R1 + X, Circle, R1 + X, R1 + Square, Circle, Square, X, Circle, Square, X, Square. Note: This serves no purpose in the game.

Extra experience (Japanese version):
When in the Gold Saucer prison, enter the well just outside of the town. Walk around until encountering a monster named "Test 0" which resembles a dog. You can poison or attack it. Instead of fighting back, it will whimper and ask that it not be hurt.

Glitch: Gold Saucer fights:
When in the fighting arena at the Gold Saucer, you will get the choice to continue or stay after defeating an opponent. The actual text reads "Off Course" instead of "Of Course".

Easy Chocobo races:
Hold L1 + L2 + R1 + R2 while racing a Chocobo to slowly restore energy. Then quickly press Circle to get energy back.

Defeating Teyioh:
When Teyioh appears on the screen that shows your opponents, press Start. When the starting line appears press Select and hold Circle until your Chocobo has about one tenth of its stamina remaining. Hold down L1 + R1 + L2 + R2 and restore its energy. When it gets back to two tenths or more, then lower it back to one tenth. Note: Do not use stamina at the ending space background unless your Chocobo is green or better.

Easy Battle Square handicaps:
Rapidly tap Square during the "slot machine" handicap sequence in the Battle Square section at Gold Saucer. The slots will slow down, allowing an easier selection of your handicap. Note: This trick will also work in a similar manner with Cait Sith's limit break.

Glitch: Gold Saucer FMV:
When flying to Gold Saucer for the first time, the propellers are facing the front, in the direction that it moves. In the FMV sequence, they are on the back, propelling it.

Glitch: Misspelling:
During the materia blend for the master command, the game displays "Sence" instead of "Sense".

After buying Chocobo stables at the Chocobo ranch, capture a Chocobo. Then go to the Chocobo rancher's son and buy some Curiel greens. Talk to the Chocobo's ranchers son again and select "Feed Chocobos". The game will display "Kurie" greens instead of "Curiel
greens. The same applies to Krakka/Karaka greens, Pahsana/Pasana greens, Mimett/Memit greens, and Gysahl/Gizzard greens.

Go to the Chocobo Sage's house, just north of Bone Village, and buy the two nuts that he is selling -- the Porov nut and the Pram nut. Go to the Chocobo rancher's son at the Chocobo Ranch. Ask him if you can buy something, and buy the Luchile nut and the Pepio nut. Now ask the Rancher's son if you can mate two Chocobos. Do not worry -- you will not have to mate the two. When he asks you what kind of nut you want to give them, instead of showing "Porov nut", "Porofu will be displayed. It is also different with the Pram/Param nut, Luchile/Ruchin nut, and Pepio/Pipio nut.