Well the CTB system instead of ATB (X-2's ATB system was better with chains and such though) moving story, awe shocking graphics, Shpere Grid (best skill system EVER!), Auron is badass, summom monsters (aeons in FFX) have commands they no longer just come out to use a attack and leave, customation system making stronger weapons, music, blitzball BEST MINI-GAME EVER! I have won 102 games the Al Bhed Physces are my rivals the other teams highest points were 3 mine was 9 I am the best blitzball team EVER! my team members are
LP: Eiggar
RP: Bickson
MF:Tidus
RDravv
LD: Brother
GK: Keepa
other: two Ronsoes don't remember thier names.
Best PS2 FF EVER that I have played (FFX and FFX-2 I don't have XI)!