Have you tried Pokemon Go yet? I gave it a go, just to see what all the fuss is about. Okay, it's kind of fun, but I found it interferes with conversation too much when walking with friends, and when I'm on my own I'd rather think about my next story, so this one's not for me. I'll keep the app on my phone, though, in case my niece and nephew want to play.
I do like the idea of games utilising augmented reality, and it opens so many possibilities for cool stuff. I'm thinking of trying Star Walk (an app that lets you explore constellations) next, but right now it's still too light out to see any stars.