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.
History of Nintendo
In 1966, Yamauchi was observing a hanafuda factory. He noticed an extending arm, which was made by one of their maintenance engineers, Gunpei Yokoi, for his own amusement. Yamauchi ordered Yokoi to develop it as a proper product for the Christmas rush. Released as the "Ultra Hand", it would become one of Nintendo's earliest toy blockbusters, selling over a million units. Seeing that Yokoi had promise, Yamauchi pulled him off assembly line work. Yokoi was soon moved from maintenance duty to product development.