Kingdom Hearts: Birth by Sleep was recently released in Japan on the 9th of January and it's proving to be very popular among the Japanese market.

The game was recorded to have sold 446,000 copies in a mere two days since its release with some shops in Japan claiming they had run out of the PSP title. Popularity within the Kingdom Hearts brand is surely a good thing for Square Enix and also a good thing for fans as sales could warrant another Kingdom Hearts title being placed further ahead on Square's long list of games in development.

There is still no confirmed date for a Western release of Kingdom Hearts: Birth by Sleep and spoilers have already emerged online including the "secret movie" hinted in several interviews with the game's director Tetsuya Nomura. Western fans will just have to wait until Square Enix finally reveal the elusive release date.