Oculus games are platform locked, and unlike other competing platforms Oculus does not provide software serials.
[1][2] Natural locomotion games only use the motion and rotation of the player's head, without apparent camera movement induced by a thumbstick or keyboard.
Whether this causes motion sickness varies based on multiple factors, including: the player's constitution, the size of the cockpit, and the intensity of motion.
These games artificially move the "camera", such as thumbstick player movement or on rails camera movement.
They can allow for a wider range of experiences, but can cause motion sickness and can be detrimental to presence.