It is common knowledge that the Kingdom Hearts series is now one of the larger RPG (role-playing game), if not general gaming franchises in the world today. The original game drew a rather unexpected and long-term haul of over 5 million worldwide units. Coupling this with the successful sales quota of GameBoy title Kingdom Hearts: Chain of Memories, this brought the series up to just under 6.5 million units sold worldwide.

Following on from this, the success of the original Kingdom Hearts game may seem almost insignificant: the impressive start Kingdom Hearts 2’s sales have produced have exceeded 3.5 millions units and are constantly rising. The series is very likely to exceed 11 million worldwide sales (it is thus far very close) and can hope to produce even greater sales with prospective future releases.