Siralim from Thylacine has only just arrived on the Vita, but the sequel to the monster collecting RPG has already been announced and confirmed for the Sony handheld. Set across randomly generated terrain, you can collect and battle with over 500 monsters
Here's a screen from the first game for comparison. I've yet to play it, and at £13.99 might wait until it is on sale. Let us know if you've given it a spin.