Pachinko (パチンコ^?) is a Japanese gaming device used for amusement and gambling. A pachinko machine resembles a vertical pinball machine, but with no flippers and a large number of relatively small balls. The player fires a ball up into the machine, controlling only its initial speed. The ball then cascades down through a dense forest of pins. In most cases, the ball falls to the bottom and is lost, but if it instead goes into certain pockets, more balls are released as a jackpot. Pachinko machines were originally strictly mechanical, but modern ones have incorporated extensive electronics, becoming similar to video slot machines, and referred to as Pachislo (パチスロ, Pachisuro^?).

The machines are widespread in establishments called "pachinko parlors", which also often feature a number of slot machines. Pachinko parlors share the reputation of slot machine dens and casinos the world over — garish decoration; over-the-top architecture; a low-hanging haze of cigarette smoke; the constant din of the machines, music, and announcements; and flashing lights. Modern pachinko machines are highly customizable, keeping enthusiasts continuously entertained.

Japan (日本, Nihon or Nippon^?, officially 日本国 Nippon-koku or Nihon-koku) is an island country in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south. The characters which make up Japan's name mean "sun-origin", which is why Japan is sometimes identified as the "Land of the Rising Sun".

Japan is an archipelago of 6,852 islands. The four largest islands are Honshū, Hokkaidō, Kyūshū and Shikoku, together accounting for 97% of Japan's land area. Most of the islands are mountainous, many volcanic; for example, Japan’s highest peak, Mount Fuji, is a volcano. Japan has the world's tenth-largest population, with about 128 million people. The Greater Tokyo Area, which includes the de facto capital city of Tokyo and several surrounding prefectures, is the largest metropolitan area in the world, with over 30 million residents.

Japanese popular culture not only reflects the attitudes and concerns of the present but also provides a link to the past. Japanese cinema, cuisine, television programs, manga, and J-pop all developed from older artistic and literary traditions, and many of their themes and styles of presentation can be traced to traditional art forms. Contemporary forms of popular culture, much like the traditional forms, provide not only entertainment but also an escape for the contemporary Japanese from the problems of an industrial world. When asked how they spent their leisure time, 80 percent of a sample of men and women surveyed by the government in 1986 said they averaged about two and one-half hours per weekday watching television, listening to the radio, and reading Japanese newspapers or magazines. Some 16 percent spent an average of two and one-quarter hours a day engaged in hobbies or amusements. Others spent leisure time participating in sports, socializing, and personal study. Teenagers and retired people reported spending more time on all of these activities than did other groups.

In the late 1980s, the family was the focus of leisure activities, such as excursions to parks or shopping districts. Although Japan is often thought of as a hard-working society with little time for pleasure, the Japanese seek entertainment wherever they can. It is common to see Japanese commuters riding the train to work, enjoying their favorite manga or listening through earphones to the latest in popular music on portable music players.