Play Asia's list comes to mind: Xbox360™ Regional Compatibility Guide Most Japanese only games are region locked with the exception of a couple. If your in to shoot em ups most of the ones that have 0 chance of ever been released outside Japan are region free, all the ones I prefer region locked however. Some of the ones that come to mind are: Mushihimesama Futari Ver 1.5 Espgaluda II Black Label Muchi Muchi Pork! & Pink Sweets
nevermind heres the whole list Mushihimesama Futari Ver 1.5 Espgaluda II Black Label Muchi Muchi Pork! & Pink Sweets Ace Combat 6: Fires of Liberation Alan Wake Biohazard 5 Blazblue Halo 3 [First Print Limited Edition] Halo Wars Lost Planet: Colonies Lost Planet: Colonies (Platinum Collection) Project Gotham Racing 4 Project Gotham Racing 4 [First Print Limited Edition] Riot Act / Crackdown Soul Calibur IV Street Fighter IV Tekken 6 The King of Fighters XII Too Human [First Print Limited Edition]