Nintendo
In 1975, Nintendo moved into the video arcade game industry with "EVR Race", designed by their first game designer, Genyo Takeda, and several more games followed. Nintendo had some small success with this venture, but the release of "Donkey Kong" in 1981, designed by Miyamoto, changed Nintendo's fortunes dramatically. The success of the game and many licensing opportunities (such as ports on the Atari 2600, Intellivision and ColecoVision) gave Nintendo a huge boost in profit and in addition, the game also introduced an early iteration of Mario, then known in Japan as Jumpman, the eventual company mascot.
Nintendo
In 1988, Gunpei Yokoi and his team at Nintendo R&D1 conceived the new Game Boy handheld system, with the purpose of merging the two very successful ideas of the Game & Watch's portability along with the NES's cartridge interchangeability. Nintendo released the Game Boy in Japan on 21 April 1989, and in North America on 31 July 1989. Nintendo of America president Minoru Arakawa managed a deal to bundle the popular third-party game "Tetris" along with the Game Boy, and the pair launched as an instant success.