Power Stone Collection - Sony PSP Two players in Power Stone and up to four in Power Stone 2 can battle it out to see who reigns supreme Game sharing function allows up to three others to play using a single UMD disc Wacky new weapons join the existing arsenal of both titles, for added comical mayhem Training mode - Practice makes perfect, as beginners and experts alike hone their skills and test drive items and weapons Pause the game during a fight and adjust the camera to take a snapshot of your glory moments