I was expecting an infantile game for kids, but as it came in the PSP box with cam was worth a try..
Works in conjunction with a 'Trap', a 10x5 (ish) rectangle with patterns on it. The camera recognises the 'Trap' and requires you to place it down in various areas to catch and play with the animal. You can walk around the animals (Or rotate the Trap if you're lazy), close in or out, and the graphics are fantastic..
I expected to play it once, then move to GranTurismo, but the technology makes it addictive..
Worth while if you're interested in 'altered reality' or wot ever it's called.. or just have a camera and want to use it more..