Takashi Tezuka in the context of Nintendo Entertainment System

Super Mario Bros. is a 1985 platform game developed and published by Nintendo for the Nintendo Entertainment System (NES). Directed and produced by Shigeru Miyamoto, it is the successor to the 1983 arcade game Mario Bros. and the first game in the Super Mario series. Players control Mario, or his brother Luigi in the multiplayer mode, to traverse the Mushroom Kingdom to rescue Princess Toadstool from King Koopa (later named Bowser). They traverse side-scrolling stages while avoiding hazards such as enemies and pits and collecting power-ups such as the Super Mushroom, Fire Flower and Starman.

Miyamoto and Takashi Tezuka designed Super Mario Bros. as a culmination of the team's experience working on Devil World and the side-scrollers Excitebike and Kung Fu. Miyamoto wanted to create a more colorful platform game with a scrolling screen and larger characters. The team designed the first level, World 1-1, as a tutorial for platform gameplay. Koji Kondo's soundtrack is one of the earliest in video games, making music a centerpiece of the design.

Bowser (Japanese: クッパ, Hepburn: Kuppa; "Koopa"), also known as King Bowser or King Koopa, is a fictional character and the main antagonist of Nintendo's Mario franchise. In Japan, he is titled Daimaō (大魔王; Great Demon King"). He is the arch-nemesis of the plumber Mario and the leader of the turtle-like Koopa race. Depicted as a fire-breathing monster with a tyrannical personality, Bowser's ultimate goals are to kidnap Princess Peach and conquer the Mushroom Kingdom.

Bowser debuted as Mario's opponent in the 1985 video game Super Mario Bros. Designer Shigeru Miyamoto initially conceived him as an ox based on the Ox-King from the Toei Animation film Alakazam the Great. However, Takashi Tezuka remarked that the character resembled a turtle more than an ox, leading them to redesign Bowser as the leader of the turtle-like Koopas. Since 2007, Bowser has been voiced by Kenneth W. James.

The history of Nintendo, a Japanese video game company based in Kyoto, starts in 1889 when Fusajiro Yamauchi founded "Yamauchi Nintendo", a producer of hanafuda playing cards. Sekiryo Kaneda was company president from 1929 to 1949. His successor Hiroshi Yamauchi had Nintendo producing toys like the Ultra Hand, and video games, including arcade games, the Color TV-Game series of home game consoles (1977—83), and the Game & Watch series of handheld electronic games (1980—86).

Shigeru Miyamoto designed Donkey Kong (1981) for arcades: Nintendo's first international hit game, and origin of the company's mascot, Mario. After the American video game crash of 1983, Nintendo filled a market gap there by releasing their Japanese Famicom home console (1983) as the Nintendo Entertainment System (NES) in 1985. Miyamoto and Takashi Tezuka's innovative Famicom/NES titles, Super Mario Bros. and The Legend of Zelda, greatly influenced gaming. The Game Boy handheld console (1989) and the Super Nintendo Entertainment System home console (1990) were successful, yet Nintendo had an intense business rivalry with Sega's consoles. The Virtual Boy (1995), a portable console with stereoscopic 3D graphics, was a critical and financial failure. With the Nintendo 64 (1996), Nintendo began making games with fully-3D computer graphics. The Pokémon media franchise, partially owned by Nintendo, has been a worldwide hit since 1996.

Super Mario Bros. 3 is a 1988 platform game developed and published by Nintendo for the Nintendo Entertainment System (NES). It was released in Japan on October 23, 1988, in North America on February 12, 1990, and in Europe on August 29, 1991. It was developed by Nintendo Entertainment Analysis and Development, led by Shigeru Miyamoto and Takashi Tezuka.

Players control brothers Mario or Luigi, who must save Princess Toadstool and the rulers of seven different kingdoms from the villain, Bowser. As in previous Super Mario games, they defeat enemies by stomping on them or using items that bestow magical powers; they also have new abilities, including flight and sliding down slopes. Super Mario Bros. 3 introduced Super Mario staples such as Bowser's children (the Koopalings) and a world map to transition between levels.