Personally I've only played the Nintendo DS once, and that was when I was in Walmart playing the dog game lol. But even after that one play, I must say, it's definitely cool to see a split screen like that on a portable game system thing. Of course, there's also the PSP, which i have *never* played before. I've only heard about that thing everywhere, and i think on South Park too? lol. But the point is, I have no other choice but to say the Nintendo DS because I've never actually had the oppurtunity to play the PSP on my own time. Maybe in the near feature i wil