Take a look at the Sphero 2B as it interact in a game of ball at CES 2014. The smartphone-controlled toy will retail for $100 when it drops in the fall -- that's $60 less than Sphero 2.0's current asking price. The company had a handful of models on the floor, and while all of them are prototypes, they worked remarkably well. We got the hang of it from the first moment we picked up the iOS app. It's responsive and handles a lot better than its predecessor right out of the box, no doubt owing to the slightly more traditional form factor -- that is, if you can use a word like "traditional" to refer to a device like this.