Perhaps you recall the rash of Wiimote-related accidents seven or eight years ago. See, people got really, super into playing Wii, and sometimes the Wiimote just slipped and crashed into the TV. Motion Tennis Cast is kind of like Wii Sports Tennis, but you're controlling it with your phone. That's two expensive things you can break if the phone slips.
What if I told you that you could carry an 80" Android device around in your pocket? What do you think you would say to me? Perhaps you'd say, "Clearly you are talking about a pico projector device and I'm not falling for your shenanigans." Dang, you're really good at this game. What you probably didn't expect, though, is that the Lightplay by PhoneSuit, as it is called, also features a motion controller with a built-in keyboard, a tripod and access to the entire Google Play Store.