|This article is written from the Real Life point of view|
Nintendo Research and Development 1 (also known as R&D1) is Nintendo's oldest development team. Its creation coincided with Nintendo's entry into the video games industry, and the original R&D1 was headed by Gunpei Yokoi, one of the creators of the Metroid series.
In 1986, several developers left R&D1 to form Intelligent Systems, which became another first party developer for Nintendo.
After Yokoi's resignation in 1996, the group was led by Takehiro Izushi. In 2005, Satoru Iwata restructured Nintendo's development resources and placed all of the internal software teams, including R&D1, under Nintendo Entertainment Analysis and Development.