Nerve Gear
The overarching premise of Sword Art Online is 10,000 players have logged into a newly launched MMORPG via a “Nerve Gear” virtual reality headset. During this first day of launch the game’s creator, Akihiko Kayaba, removes everyone’s ability to log out. Every player is warned that if they die in SAO, they will die in real life. The Nerve Gear headset conveniently uses microwaves to connect your brain to the game, so if you try to remove the headset while connected you’ll die. The only way to save your life is to clear the game’s 100 floors and then you’ll be able to log out. Nerve Gear created for the use of virtual, realistic gaming which one can play as themselves as a character moving like you would in the normal human world. A virtual reality helmet that stimulates the user's five senses via their brain, players can experience and control their in-game characters with their minds