Since it began its quest for sales dominance outside of Japan’s borders, Square Enix's Final Fantasy XIII, the latest release in the epic RPG franchise, has sold more than 5 million games worldwide. With some of the most beautifully designed graphics ever seen in a video game it has quickly become the fastest selling Final Fantasy title to date. This translates into a definite win for game developer Square Enix, and for the Japanese RPG genre which had been overtaken by their Western counterparts in recent years.

But can the franchise survive?