Virtual reality
Around the same time, Douglas Engelbart used computer screens both as input and output devices. In 1968, Ivan Sutherland, with the help of many students including Bob Sproull, created what was widely considered to be the first head-mounted display (HMD) system for use in immersive simulation applications. It was primitive both in terms of user interface and realism, and the HMD to be worn by the user was so heavy that it had to be suspended from the ceiling. The graphics comprising the virtual environment were simple wire-frame model rooms. The formidable appearance of the device inspired its name, The Sword of Damocles.
Missile Command 3D
Plans for a virtual reality headset for the Jaguar were set before the system was officially launched to market, with Atari Corporation originally approaching to Virtuality Group in but they did not settled an agreement with the latter for unknown reasons, but on October Atari Corp. announced their partnership with Virtuality to create a headset for the Jaguar that would have been released on stores by Christmas 1995 and was originally set to be retailed at US$200. The development of the headset for the system was started before Nintendo officially unveiled their own virtual reality console, the Virtual Boy, a month later. The unit itself was revealed at WCES 1995, with both "GameFan" and "GamePro" magazines showcasing a mock up design of the headset in their January and February 1995 issues respectively.