u should buy them a ps3 with ffxiii and other games like littlebigplanet, ratchet, modnation racers, etc. if ffxiii is too hard they will just beat it in a couple of years. I started playing ff at the age of 6, and i beat my first one at 9 or 10 years old, lol. I think that as long as u buy them other games ur ok. Buy them ffxiii