Akihabara , also known as Akihabara Electric Town, is an area of Tokyo. It is located less than five minutes by rail from Tokyo Station. Its name is frequently shortened to Akiba in Japan.
Akihabara is a major shopping area for electronic, computer, anime, and otaku goods, including new and used items. New items are mostly to be found on the main street, Chūōdōri, with many kinds of used items found in the back streets of Soto Kanda 3-chōme. New parts for PC-building are readily available from a variety of stores. Tools, electrical parts, wires, microsized cameras and similar items are found in the cramped passageways of Soto Kanda 1-chōme (near the station). Foreign tourists tend to visit the big name shops like Laox or other speciality shops near the station, though there is more variety and lower prices at locales a little further away. Akihabara gained some fame through being home to one of the first stores devoted to personal robots and robotics.
Here is a small video in a game center where young japanese guy ( mostly ) used to spend some times.. Thanks to Aurelien for the video
By train: JR Akihabara station with the JR Yamanote Line or the Keihin-Tōhoku Line or the Chūō-Sōbu Line
Tokyo Metro: Tokyo Metro Hibiya Line