Sword Art Online(SAO) is a Japanese light novel written by Reki Kawahara and illustrated by Abec. Kawahara wrote this as a web novel in 2002 and it was published in 2009 by ASCII Media Works and launched as anime series in 2012.
The plot of Sword Art Online:
In 2022, a virtual reality massively multiplayer online role-playing(MMORP) game named Sword Art Online is released. To log into the game a player must wear a VR helmet named NerveGear, a helmet that stimulates the user's five senses via their brain. Both the game and the NerveGear were created by Akihiko Kayaba. On November 6, 10k players log into the game and come to know that there is no log out button. So, if the players want themselves to be free, they have to complete all of the 100 levels or floors of the game. And if anyone tries to put the helmet off he/she will die in real life.
In the near future we are going to enjoy the same game as SAO, but probably with the log out button. Thanks to IBM(International Business Machines Corporation). This American multinational technology company has taken the challenge of creating the game and the NerveGear. In February 2016 IBM declared that they will make Sword Art Online in real life and will try their best to release that on the same day as there was in the series, on 6th November 2022. The developer is told to develop the game exactly like the SAO novel. In the light novel, Akihiko Kayaba was given 100 million Yen in 2013, that's more than 10 million dollars. IBM couldn't find Akihiko Kayaba, so they decided to make a team of developers. Now you can ask how big the map will be? In SAO!
1st floor had a diameter of 10 km. As we know the floor was a complete circle, which means the area of the floor was about 78.54 square km.
In SAO the floors were gradually tapered off to a point of the top, so as they calculated the size of the SAO world would be an absolutely ridiculous size of 3797 square km. The size is bigger than the area of 28 countries. But the developers are facing trouble to make the NerveGear, cause if they make only the helmet as NerveGear possibly that can be injurious. So they decided to create a gaming geared suit as we have seen in ‘Ready Player One'. But still, it's not final that what they will actually do. The game will have two servers probably.
Now we have nothing to do except waiting till 2022.