1. A data holding device holding instructions executable by a logic device, the instructions comprising: instructions to render a three-dimensional virtual gaming world for display on a display device; instructions to receive a machine-readable virtual skeleton structurally representing a human being sighted by a depth camera in a volume large enough to envelop the human being, the virtual skeleton including a hand joint position in three dimensions corresponding to a position of a hand of the human being; instructions to render a control cursor for display on the display device, a screen position of the control cursor tracking the hand joint position; instructions to lock the control cursor to an object in the three-dimensional virtual gaming world if a grab threshold of the object is overcome; instructions to, when the control cursor is locked to the object, move the object in all three dimensions to track the hand joint position anywhere in the volume, such that movement of the hand effects a corresponding movement of the object in the three-dimensional virtual gaming world; and instructions to unlock the control cursor from the object at a release position of the object within the three-dimensional virtual gaming world if a release threshold of the object is overcome.