Joystiq writes: "Invizimals was one of the biggest surprises for us at E3. Shown only behind closed doors, we were captivated by its unique camera-based, Pokemon-inspired gameplay. It felt "magical," and we think you'll agree once you see this story trailer. As you can see, these critters are real, only visible through the PSP camera. But what if the energy of these invisible animals could be weaponized? Terrifying, isn't it? As the trailer shows, this is serious, Academy Award-winning stuff. You will not witness truer human drama."
how many kinds of monsters r there?
That the PSPgo both doesn't have an internal camera or supports the external mod for the regular PSP.
I really think a camera like this should have been integrated into the PSP GO, but it's not necessary.