Double Dragon II: The Revenge (ダブルドラゴンII ザ・リベンジ Daburu Doragon II: Za Ribenji?) is a side-scrolling beat 'em up produced by Technōs Japan originally released as a coin-operated arcade game in 1988. It is the sequel to Double Dragon, released during the previous year. A home version for the Nintendo Entertainment System was released in 1989 which differs drastically from the original arcade game. Other home versions were also released for the Sega Mega Drive/Genesis and PC Engine.

Originally released for Japanese arcades in 1991, Double Dragon III: The Sacred Stones is the third game in the Double Dragon franchise. Developed by East Technology and published by Technos Japan Corp., Double Dragon III: The Sacred Stones has since been released on a wide variety of platforms, with numerous differences between ports. Typically regarded as one of the worst games in the franchise, Double Dragon III: The Sacred Stones is often criticized for its shop system, unnecessarily difficult bosses, and lowered graphical quality. Despite this, the NES version received mostly positive reviews, due to the more direct attention from Technōs Japan Corp.

Downtown is a term primarily used in North America by English speakers to refer to a city's core (or center) or CBD (Central Business District), often in a geographical, commercial, or communal sense. The term is thought to have been coined in New York City, where it was in use by the 1830s to refer to the original town at the southern tip of the island of Manhattan. As the town of New York grew into a city, the only direction it could grow on the island was toward the north, proceeding upriver from the original settlement (the "up" and "down" terminology in turn came from the customary map design in which up was north and down was south). Thus, anything north of the original town became known as "uptown" (Upper Manhattan), while the original town (which was also New York's only major center of business at the time) became known as "downtown" (Lower Manhattan). During the late 19th century, the term was gradually adopted by cities across the United States and Canada to refer to the historical core of the city (which was most often the same as the commercial heart of the city). Notably, it was not included in dictionaries as late as the 1880s. But by the early 1900s, downtown was clearly established as the proper term in American English for a city's central business district.

Dragon Ball (ドラゴンボール, Doragon Bōru) is a Japanese manga series written and illustrated by Akira Toriyama. It was originally serialized in Weekly Shōnen Jump from 1984 to 1995, with the 519 individual chapters published into 42 tankōbon volumes by Shueisha. Dragon Ball was initially inspired by the classical Chinese novel Journey to the West. The series follows the adventures of the protagonist, Goku, from his childhood through adulthood as he trains in martial arts and explores the world in search of the seven orbs known as the Dragon Balls, which summon a wish-granting dragon when gathered. Along his journey, Goku makes several friends and battles a wide variety of villains, many of whom also seek the Dragon Balls. The 42 tankōbon have been adapted into two anime series produced by Toei Animation: Dragon Ball and Dragon Ball Z, which together were broadcast in Japan from 1986 to 1996. Additionally, Toei has developed eighteen animated feature films and three television specials, as well as an anime sequel titled Dragon Ball GT, which takes place after the events of the manga. From 2009 to 2011, Toei broadcast a revised, faster-paced version of Dragon Ball Z under the title Dragon Ball Kai, in which most of the original version's footage not featured in the manga was removed. Several companies have developed various types of merchandising based on the series leading to a large media franchise that includes films, both animated and live-action, collectible trading card games, numerous action figures, along with several collections of soundtracks and a large number of video games. The manga series was licensed for an English-language release in North America by Viz Media, in the United Kingdom by Gollancz Manga, and Australia and New Zealand by Madman Entertainment. The entire anime series was licensed by Funimation Entertainment for an English-language release in the United States, although the series has not always been dubbed by the same studio. There have been many films of the franchise including the first live-action film adaptation being produced in 1989 in Taiwan. In 2002, 20th Century Fox acquired the rights to produce an American-made live-action film titled Dragonball Evolution that received a negative reception from critics and fans; the movie was released on April 10, 2009 in the United States. Since its release, Dragon Ball has become one of the most successful manga and anime series of all time. The manga's 42 volumes have sold over 156 million copies in Japan and more than 230 million copies worldwide, making it the second best-selling manga series in history. Reviewers have praised the art, characterization, and humor of the story. It is widely regarded as one of the greatest manga series ever made, with many manga artists such as Eiichiro Oda (One Piece), Masashi Kishimoto (Naruto), Tite Kubo (Bleach), Hiro Mashima (Rave Master, Fairy Tail) and Kentaro Yabuki (Black Cat) citing Dragon Ball as a source of inspiration for their own now popular works. The anime, particularly Dragon Ball Z, is also highly popular in various countries and was arguably one of the most influential in boosting the popularity of Japanese animation in Western culture.