A method for changing a virtual reality scene displayed in a head mounted display, HMD, the method comprising: obtaining (160, 404, 424, 440) sensor data from sensors of the HMD, the sensors including inertial sensors; processing (162, 412, 426, 442) the sensor data for determining that a criteria is met to transition from the virtual reality scene to an augmented virtual reality scene to be presented by the HMD, the criteria corresponding to predetermined indicators that are suggestive of disorientation of a user when wearing the HMD and being presented the virtual reality scene, the augmented virtual reality scene being a modified version of the virtual reality scene; and overlaying (164, 414, 428, 454), based on said determining that the criteria is met, an image of at least part of a real world object (238, 240) from a real world view into the virtual reality scene for the augmented virtual reality scene, the real world view being captured by one or more cameras (106, 108) disposed in a virtual reality interactive space, the method being characterised by further comprising: determining (430, 456) that the criteria is still being met after the real world object has been overlaid into the virtual reality scene to provide the augmented virtual reality scene; continuing (432, 458) to overlay additional real world objects (236, 237a, 234, 235, 239) from the real world view while the criteria is still being met, wherein the continuing to overlay additional real world objects enables the augmented virtual reality scene (250d, 250e) to become progressively populated with real world objects. obtaining (160, 404, 424, 440) sensor data from sensors of the HMD, the sensors including inertial sensors; processing (162, 412, 426, 442) the sensor data for determining that a criteria is met to transition from the virtual reality scene to an augmented virtual reality scene to be presented by the HMD, the criteria corresponding to predetermined indicators that are suggestive of disorientation of a user when wearing the HMD and being presented the virtual reality scene, the augmented virtual reality scene being a modified version of the virtual reality scene; and overlaying (164, 414, 428, 454), based on said determining that the criteria is met, an image of at least part of a real world object (238, 240) from a real world view into the virtual reality scene for the augmented virtual reality scene, the real world view being captured by one or more cameras (106, 108) disposed in a virtual reality interactive space, the method being characterised by further comprising: determining (430, 456) that the criteria is still being met after the real world object has been overlaid into the virtual reality scene to provide the augmented virtual reality scene; continuing (432, 458) to overlay additional real world objects (236, 237a, 234, 235, 239) from the real world view while the criteria is still being met, wherein the continuing to overlay additional real world objects enables the augmented virtual reality scene (250d, 250e) to become progressively populated with real world objects. determining (430, 456) that the criteria is still being met after the real world object has been overlaid into the virtual reality scene to provide the augmented virtual reality scene; continuing (432, 458) to overlay additional real world objects (236, 237a, 234, 235, 239) from the real world view while the criteria is still being met, wherein the continuing to overlay additional real world objects enables the augmented virtual reality scene (250d, 250e) to become progressively populated with real world objects.