The first Final Fantasy Tactics game to use the Law system which limits the freedom of using certain commands in the game. This would later be used in the sequel Final Fantasy Tactics A2: Grimoire of the Rift.
This game is available on the Wii U virtual console shop channel in the Gameboy Advance section as of right now.
This is the first game to feature the world Ivalice in a modern day setting which is only an introduction, however the player goes into the medieval setting upon gameplay much like Final Fantasy Tactics.
Montblanc the Moogle who's a playable character in Final Fantasy Tactics Advance, was in other Final Fantasy World of Ivalice games including being a non-playable cameo in Final Fantasy XII, he also appeared in Final Fantasy Tactics A2: Grimoire of the Rift as a playable character.