I've heard that the DS version required the use of a large real life book of spells because you need to know how to draw the symbols on the screen. It's seems like a really bad design choice. Who is going to carry around this book to play a portable game? But, I would hope they would just take the PS3 version and scale it down for 3DS. I'd love to draw the spell symbols with the stylus ala Okami and Okamiden.