See virtual reality headset article for more information. For a list of games, see List of VR games.
Oculus Rift Development Kit 2 aka DK2 was the second release of the headset for developers. Supports seated and standing positional tracking. It is still supported within Oculus Store, and can be used with an Xbox One Controller to play non- touch controller games.
Oculus Rift Development Kit 1 aka DK1 was Oculus' first release of a headset. It only supports rotational tracking, o positional tracking, thus it can only be used for seated and a few standing rotational experiences. It not supported by the Oculus Store.
Comes in the box, can be used to play simple movies and experiences that don't require interaction or gameplay.
Oculus Touch comes with an additional Oculus Sensor, and can be either be bought separately from the Oculus rift, or brought together in the Oculus Rift + Touch bundle. they use positional tracking, and have a thumbstick, trigger, grip analogue, two face buttons and a system button. The thumb and the index finger are positionally tracked.