I do recommend 2 though so you can connect them that makes it a lot more fun - I dont enjoy 4u as much when i run it solo - ps are my fave and solo or running more than 1 i always enjoy and enjoy it without the downloads too, but I must have my pierces - but if i didnt have my nfc tab or irda phone, I'd probably feel I needed one - its nice to have the option and not use it than to not have the option at all if that makes sense - I ran my plus color for a few weeks, I wasnt totally crazy about it - they are definitely hard - lots of work to earn gotchi points - I think if I am looking at my plus color and 4u i would choose 4u