Virtual reality
The 1990s saw the first widespread commercial releases of consumer headsets. In 1991, Sega announced the Sega VR headset for arcade games and the Mega Drive console. It used LCD screens in the visor, stereo headphones, and inertial sensors that allowed the system to track and react to the movements of the user's head. In the same year, Virtuality launched and went on to become the first mass-produced, networked, multiplayer VR entertainment system. It was released in many countries, including a dedicated VR arcade at Embarcadero Center in San Francisco. Costing up to $73,000 per multi-pod Virtuality system, they featured headsets and exoskeleton gloves that gave one of the first "immersive" VR experiences. "Computer Gaming World" predicted "Affordable VR by 1994".
Windows Mixed Reality
In October 2017, Microsoft officially launched Windows Mixed Reality and a lineup of third-party headsets for use with the Windows 10 "Fall Creators Update" (including a launch lineup of headsets from Acer, Dell, HP, and Lenovo, and future products from Asus and Samsung), officially referred to as Windows Mixed Reality immersive headsets. Unlike HoloLens, these devices are only compatible with virtual reality software, but the underlying ecosystem is referred to as Windows Mixed Reality regardless of experience. All Immersive headsets feature integrated motion tracking (eschewing standalone sensors), and contain cameras that can be used to track handheld motion controller accessories, which may be bundled with the headset, or distributed as optional accessories.