Happy Festive Wishes to you all!

My wife and I picked up a couple of iPads and would like recommendations for 2 player (over wifi or cellular) games.

We've got Words with Friends but anything else you'd recommend? I'm not sure what we want but will know once I see it if that makes sense?

Also any single player games anyone would recommend - puzzle/strategy ones in particular? Anyone remember Armadillo Run? Anything along those lines would be ideal.

Thanks all!