Personally I find the Final Fantasy series the best RPG's ever produced. And then I didn't even get the chance to play all the games (above Final Fantasy &), because they come only on selected platforms..
I don't know how it is with Fable and Fallout, but the great thing about Final Fantasy is that there a lot of side missions. Only accomplishing these side missions cost a lot of time. Even if you play for three months with a game guide you can still can't achieve 100% status with Final Fantasy. That big is a Final Fantasy game. It's the same with the Grand Theft Auto games.
Whoever hasn't watched Final Fantasy VII Advent Children (it's a movie based on Final Fantasy 7 characters) really should do it.
You won't see action like that in any other animation movie.
I don't know how it is with Fable and Fallout, but the great thing about Final Fantasy is that there a lot of side missions. Only accomplishing these side missions cost a lot of time. Even if you play for three months with a game guide you can still can't achieve 100% status with Final Fantasy. That big is a Final Fantasy game. It's the same with the Grand Theft Auto games.