1. Make sure your Android TV and phone both have the latest version of BBR installed (1.2.6 or higher)
  2. Start up the game on Android TV
  3. Start up the game on your phone or tablet
  4. Click the "Mobile Controller" button that appears in the upper left corner of the title screen
That's it!  Once you're paired, your phone screen will switch into controller mode and you can play BBR on Android TV using the on-screen buttons.  When you race in game, you'll be able to steer with tilt controls and you get a nifty speedometer and tachometer/shift indicator.