The PSP doesn't have too much in the way of quality action-RPGs, but there's one looming on the horizon that might slip under your radar if you're not careful. Due out Feb. 13, Gurumin: A Monstrous Adventure is the achingly cute story of Parin, a lonely little girl who wanders through forests, ruins and dungeons killing things with a rock drill. It's not exactly Zelda, but given the rest of the offerings for the PSP right now, it's about as close as you'll get on Sony's handheld for a