Technically, you don't HAVE to buy a PSP. You just have to find a person with a PSP and make friends really, really fast. Seriously, though...even if it is released on PSP first, I can't imagine that the DVD would be released an eternity later. Maybe a few weeks waiting period, tops. And as long as we've all waited...half a month isn't going to kill us. My advice: Unless you were gonna buy a PSP for other reasons as well, save yourself some cash.