I want it the most based purely on the idea that the mere fact that I have no idea what LocoRoco 2 is makes me want it extremely badly. Let me explain.
Suppose you're standing away from a group of people and they're all looking at a picture of something, marveling at what it is, but you can't see it. So it eats at you, and suddenly the only thing on your mind is 'what the hell are they looking at? I REALLY WANT TO SEE IT'. That sense of being curious pushes someone to want to know and understand it.
And, since I have no idea what LocoRoco 2 is and I'm curious as all hell to figure it out and actually play it, than I have to say that my want easily beats out anyone who does know what LocoRoco 2 is.
That, and the whole fact that I went into that whole process and was willing to put that much thought into convincing you that I want it that bad should give you an idea of how bad I want it.