This game has to be the game of the century because of how awesome it is. Here are some cool cheats for Final Fantasy X.

Aeons

First, after you leave the Calm Lands, go to a bridge before Mt. Gagazet. Then go under it and it will take you to Sunken Cave. Get to end of the Cave and pay Yojimbo 250,000 and he is yours. To get Anima, get all of the destructive sphere treasures in all six temples. Then go to Baaj Temple when you get the airship and beat the boss. Then, go inside the temple and touch all of the stones--the chamber to fayth will open. To get the Magus sisters, catch all the monsters at Mt. Gagazet, then go to battle arena and you will get an item. Next, go to Remiem temple in the Calm Lands, then go inside and fight the summoner. Beat all of her aeons, then go to the colored door behind her, and then the chamber to fayth will open.


AP Trick

To get alot of AP in one battle, you have to capture all the monsters at the thunder plains, then give each of your party members weapon the OVERDRIVE-AP which instead of your overdrive going up you get more AP. Then fight King Cactuar, make sure your overdrive gauge is on stoic. The Cactuar King will it you with 10,000 or 99,999 raising the AP you learn quicker.

To get OVERDRIVE-AP ability it takes 30 doors to tomorrow.


Easy Overdrive Boost

At an inn or shops, go to the help panel. Battle a fiend and try to fill your overdrive. After the battle you will be completely restored.


Faster party

Have your three fastest characters in your battle party formation to always get your initial turns faster. Then, just switch them out for slower characters, allowing them to go instead.


Easier Chocobo handling

Hold L1 + L2 + R1 + R2 and your Chocobo will be easier to steer.


Keep items in Monster Arena

When fighting in the Monster Arena, even if you die, you still keep any items you may have stolen.


Defeating Evrae Altana

Use two or three Phoenix Downs on it to kill it instantly.


Overdrives

Auron:

Find different Jeckt Spheres laying about the world. Some of these will give Auron a new Overdrive. You need to find all ten to get Auron's final overdrive.


Kimari:

Use the Dragon Sword ability to drain HP and MP from the enemy. If the enemy has a Blue magic skill that Kimari can learn, he will gain it automatically. The only one that is difficult to get is "Sunshine", which you obtain from the Omega Weapon.


Lulu:

Rotate the Right Analog-stick clockwise as fast as possible. The number will go up the more you rotate it. The more you level Lulu up, the easier it is to cast multiple spells.


Rikku:

Rikku's overdrive combines items to create special attacks and power-ups during battle. You have to choose any two items to combine. Note: Two of the same kind will work.


Tidus:

Just keep using them over and over. After a while, he will learn his next Overdrive.