Kingdom Hearts is a very beloved franchise from big-time RPG company Square Enix (in association with Disney) which takes an action-adventure approach to the role playing genre. This prequel to the series will let you bring the game with you on those long train rides, boring marriage counseling appointments, or even just in your bed when your back is too tired from sitting up playing consoles. Wondering what this will look like? Take a look for yourself at the upcoming KH: Birth by Sleep heading to PlayStation Portable for an expected release date of September 7th, 2010.