Most people buying this game will already be aware of the Final Fantasy series and the main aspects of an RPG. This follows the similar role-playing gameplay of battling, exploring new towns/dungeons, and making your characters stronger.
These are all done very well and, while there won't be much new to any diehard RPG-fan, the game is enjoyable throughout its 30+ hour lifetime.
The new job system is fantastic, you begin with around 6 jobs and unlock many more as you progress through the game. Changing jobs gives a slight penalty, which helps prevent job-changing every battle, however when assigning a character a new job there is not so much of a penalty that you are discouraged from switching every so often.
The storyline is decent, following a typical RPG pattern but never getting dull and repetitive. The battling is textbook turn-based RPG, with some very interesting boss battles. Some of the bosses can be very difficult, but can always be overcome with an extra hour or two of training.
The only reason I did not give this game five stars is because once you've gone through it the first time, there is little replay value. I can't see myself playing the game through again for a long time until the game will feel "new" again. However, the game's longevity more than makes up for it's lack of replay value.
If you want a game that is going to last you a long time and are a fan of RPGs or previous Final Fantasy games, this game is superb. An excellent RPG that is well worth buying.