You know this is the hardest question i have ever had to answer. and i cannot as two of the features i have never played (3,6). But i would have to say 7's metirria system at the moment.
FF1's Party Creation
FF2's Key Term System
FF3's Support Character System
FF4's Introduction of ATB, and everything
FF5's Job System
FF6's Esper System
FF7's Materia System
FF8's Junction System
FF9's ATE System
FF10's Sphere Grid System
FF10-2's Mission System
FF11's Online System
FF12's Gambit System
Other
You know this is the hardest question i have ever had to answer. and i cannot as two of the features i have never played (3,6). But i would have to say 7's metirria system at the moment.
I'm back who mised me.
Tumble weed roles across the ground.