Developer: Square

Related Links:
Final Fantasy X GMVs
Final Fantasy X Game Trailers
Final Fantasy X Cutscenes
Final Fantasy X Gameplay Videos
Final Fantasy X Parodies
Final Fantasy X Cheats

Part of the Final Fantasy Series:
Final Fantasy (PS1, GBA, PSP)
Final Fantasy II (PS1, PSP)
Final Fantasy III (NDS)
Final Fantasy IV (PS1, GBA, NDS)
Final Fantasy V (PS1, GBA)
Final Fantasy VI (PS1, GBA)
Final Fantasy VII (PS1, PC)
Final Fantasy VIII (PS1, PC)
Final Fantasy IX (PS1)
Final Fantasy X (PS1)
Final Fantasy X (PS2)
Final Fantasy XI (PS2, PC, XBOX 360)
Final Fantasy XII (PS2)
Final Fantasy XIII (PS3)

Spin-Offs:
Final Fantasy Tactics (PS1)
Final Fantasy Tactics Advance (GBA)

Dirge of Cerberus: Final Fantasy VII (PS2)
Crisis Core: Final Fantasy VII (PSP)

Final Fantasy VII: Revenant Wings (NDS)
Final Fantasy Tactics: The War of the Lions (PSP)
Final Fantasy Tactics A2: Grimoire of the Rift (NDS)

Final Fantasy X-2 (PS2)

Final Fantasy Versus XIII (PS3)

There are also Final Fantasy X International version (PS2).

The difference is that the normal Final Fantasy X won't have a special battle called "The Dark Aeon" battle. This feature will happen only in Final Fantasy X International (PS2).

The Dark Aeon battle is an ultra hard battle that happened after we had defeated Yunalesca. After defeating all dark Aeons, an ultra powerful boss by the name of Penance
will appear. Each Dark Aeon will drop 2 Dark Matters or A Master Sphere.