FF10 Overdrive

Overdrive is very similiar to a limit break, but it can be more looked at as a special attack.

Tidus - Sword Skill.
There's a cursor that moves to the left and right. If you have a good timing and press the action button when the cursor is at the center, you will inflict more damage.

Yuna - Monster Summon
Yuna summons a beast with their overdrive gauge at MAX

Wakka - Slot
Wakka attacks depending of the color of the atribute the slot chooses.

Kimari - Enemy Skill
You can acquire enemy skills with the Dragon Sword ability and (of course) you can use them later vs. your enemies.

Lulu - Temptation
During acertain amount of time you have to make combinations with the R3 stick. Depending on the combination, Lulu makes a combination of spells.

Auron- Secret
You acquire auron's overdrive techniques from the different places you visit. As the name of the overdrive says, you have to find the secret places.

Rikku - Compound
You combine 2 items to make a new one.