VRFocus - Virtual reality (VR) development brings with it a very specific set of requirements that place it apart from any other form of videogame development. Oculus VR has been preaching these rules concerning developing for the Oculus Rift head-mounted display (HMD) to anyone that will listen for much of 2014. But what about Gear VR, Samsung’s smartphone-based HMD? Does running VR on a handset such as the Galaxy Note 4 bring its own set of rules to the table? Development engine company Unity certainly thinks so.