Ahhhh, yes! I remember FFXI had one which was called "Tetra Master". I hope we can get it back for this game... I remember hearing from the developers though that they're thinking about putting it as another game along with FFXIV.

Also, it was part of the playonline service from Square-Enix. Man, I seriously hope they can put this in the game with the PlayOnline feature back again so they can put these other games in their service.

Please Square!

http://finalfantasy.wikia.com/wiki/PlayOnline
http://finalfantasy.wikia.com/wiki/Tetra_Master