It might sound goofy to toss around the term "killer app," but screw it--LittleBigPlanet PS Vita is the PlayStation Vita's killer app. Let's start at the top: it's the best LittleBigPlanet game yet, and it's not even from the folks that created the franchise. LBP PS Vita takes the platforming we all know and love and tosses in Vita touch functionality that makes sense and is actually engaging to use. Then, it takes the ability to create games and makes it even better by allowing creators to give players the ability to save progress--so now lenghty RPGs are a reality. Of course, making and sharing all these levels remains free, and then there's the ability to play through levels with online friends. Oh, and all the DLC from other LBP games works here. Ahem, this is the fattest, bang for your buck game on the PlayStation Vita, and that's why LittleBigPlanet PS Vita is the IGN Vita Game of the Year. There's an endless stream of content, and it's awesome.