Despite being an average RPG game, its incredibly short even while doing side missions and wandering from the main story line. There is no argument between fans of the Fable franchise that the first has been and always will be the best, Fable 2 held its own in the RPG genre against such titles as Fallout3 and Oblivion and was a good game but Fable 3 was unarguably the worst of the franchise.
Don’t get me wrong its good, because its Fable, but it certainly doesn’t compare to the first. It just doesn’t feel like there’s as much freedom as the first two. Without doubt its no where near enough to keep any fan occupied until the next one. Id say stick with Witcher 2 and wait for Skyrim.