Nintendo Entertainment Analysis & Development

During the 1970s, when Nintendo was still predominantly a toy company, it decided to expand into interactive entertainment and the video game industry. Several designers were hired to work under the Creative Department, which, at the time, was the only game development department within Nintendo. Among these new designers were Makoto Kano, who went on to design various Game & Watch games, and Shigeru Miyamoto, who would create various Nintendo franchises. In 1972, the department was renamed to Research & Development Department; it had about 20 employees. The department was later consolidated into a division and separated into three groups, Nintendo R&D1, R&D2 and R&D3.

Circa 1983, Hiroshi Imanishi oversaw the creation of Research & Development No. 4 Department (commonly abbreviated to Nintendo R&D4), as a new development department dedicated to developing video games for home consoles, complementing the other three existing departments in the Nintendo Manufacturing Division.^[3][4][5] Imanishi appointed Hiroshi Ikeda, a former director at Toei Animation, as general manager of the newly created department, and Miyamoto as its chief producer.^[6] Also hired were Takashi Tezuka and Kenji Miki, graphic designers, Minoru Maeda, a designer, and Koji Kondo, Akito Nakatsuka, and Hirokazu Tanaka, all sound designers.

Ikeda's creative team had many ideas, but lacked the programming skills to put them into action. Mario Bros., one of the unit's first games, required assistance in this regard from Gunpei Yokoi and R&D1. Toshihiko Nakago was familiar with the chipset for the Family Computer, Nintendo's contemporary home console, as he was originally hired to work with Masayuki Uemura's Nintendo R&D2 to develop software development kits for Nintendo consoles. When R&D2 and Systems Research and Development, Nakago's company, began porting R&D1-developed arcade games to the Famicom, Shigeru Miyamoto lured him and SRD to R&D4 to help develop Excitebike.

Following the release of Excitebike, R&D4 developed a Famicom port of the beat 'em up arcade game Kung-Fu Master, called Spartan X in Japan and Kung Fu everywhere else. The game improved on features introduced in Donkey Kong, representing a key step in the life of the platform game genre.^[7][8] Their next game was Super Mario Bros., a self-developed sequel to Mario Bros. The game standardized many aspects of the platform genre, and went on to be a critical and commercial success. Developed concurrently, but released a year later, was The Legend of Zelda, an action adventure game. The phenomenal sales of Mario and Zelda made Miyamoto a household name^[9], and allowed the department to expand. Hideki Konno, Katsuya Eguchi, Kensuke Tanabe, and Takao Shimizu were all hired at this time, and they would become producers themselves.

In 1989, one year before the Super Famicom was released in Japan, the R&D4 department was spun-off and made its own division named Nintendo Entertainment Analysis & Development (commonly abbreviated as Nintendo EAD).^[10] The division was comprised into two departments: the Software Development Department, which focused on video game development and was led by Miyamoto, and the Technology Development Department, which focused on programming and developing tools and was led by Takao Sawano.^[11] The technology department relied on R&D2 engineers who assisted SRD with software libraries. Following the release of F-Zero, the first video game fully programmed by EAD,^[12] they collaborated with Argonaut Software to develop the Super FX, a chip which, when placed in Super Famicom cartridges, enabled the use of 3D graphics. As 3D gaming became more prominent, so, too, did the department, programming several of Nintendo EAD's 3D games with SRD.

In 1997, Miyamoto explained that about twenty to thirty employees were devoted to each Nintendo EAD title during the course of its development,^[13] and that SRD was a company within the division, formally Nintendo R&D2's software unit, and was composed of about 200 programmers.^[13]

In June 2000, in an attempt to include software experts, Nintendo's board of directors invited Miyamoto to join; he also gained responsibility for all of Nintendo's software development, though he would produce further games with EAD.

In 2002, to acquire talent from Tokyo who were hesitant to move to Kyoto, Nintendo opened a branch of EAD, appointing Takao Shimizu as manager. Their first project was Donkey Kong Jungle Beat, a GameCube game which made use of the DK Bongos introduced in Donkey Konga.

In 2004, as a result of a restructuring at Nintendo, several employees at R&D1 and R&D2 were reassigned to EAD, and the department was consolidated into a division, welcoming a new class of managers and producers.^{[14][unreliable source]} Tezuka became deputy general manager, and Eiji Aonuma, Konno, Shimizu, Tadashi Sugiyama, and Katsuya Eguchi became producers overseeing their own development teams. Keizo Ota and Yasunari Nishida were appointed project managers of their own groups in the Technology Development Department.

In 2013, Eguchi was promoted to Department Manager of both Software Development Departments in Kyoto and Tokyo. As such, he left his role as Group Manager of Software Development Group No. 2, and was replaced by Hisashi Nogami. On June 18, 2014, the EAD Kyoto branch was moved from the Nintendo Central Office to the Nintendo Development Center in Kyoto. The building housed more than 1100 developers from all of Nintendo's internal research and development divisions, which included the Nintendo EAD, SPD, IRD and SDD divisions.

On September 16, 2015, during a restructuring overshadowed by the recent death of president Satoru Iwata, EAD merged with Nintendo Software Planning & Development, forming Entertainment Planning & Development (EPD).^[15]

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The Nintendo Entertainment Analysis & Development division was headed by Nintendo-veteran Takashi Tezuka who acted as general manager. The division was divided in two development departments: one in Kyoto, with Katsuya Eguchi acting as its deputy general manager; and one in Tokyo, with Yoshiaki Koizumi acting as its deputy general manager.

The Nintendo EAD Kyoto Software Development Department was the largest and one of the oldest research and development departments within Nintendo, housing more than 700 video game developers. It was located in Kyoto, Japan, formerly in the Nintendo Central Office, but on June 28, 2014, it was relocated to the new Nintendo Development Center, which housed all of Nintendo's internal research and development divisions.

The development department integrated Nintendo's most notable producers: Hideki Konno, producer of the Nintendogs and Mario Kart series; Katsuya Eguchi, producer of the Wii and Animal Crossing series; Eiji Aonuma, producer of The Legend of Zelda series; Hiroyuki Kimura, producer Big Brain Academy, Super Mario Bros., and Pikmin series; and Tadashi Sugiyama, producer of the Wii Fit, Steel Diver and Star Fox series.

The department was managed by veteran Nintendo game designer Katsuya Eguchi. As such, Hisashi Nogami later succeeded him as the producer of the Animal Crossing franchise and was responsible for the creation of the Splatoon series.

The Nintendo EAD Tokyo Software Development Department was created in 2002 with the goal of bringing in fresh new talent from the capital of Japan who wouldn't be willing to travel hundreds of miles away to Kyoto. It is located in Tokyo, Japan, in the Nintendo Tokyo Office.

In 2003, twenty members of the Entertainment Analysis & Development Division in Kyoto volunteered to relocate to Nintendo's Tokyo Office to expand development resources. These twenty volunteers were primarily from the Super Mario Sunshine team. Management saw it as a good opportunity to expand and recruit several developers who were more comfortable living in Tokyo than relocating to Kyoto.

Takao Shimizu (original manager and producer) and Yoshiaki Koizumi (director) began hiring several recruits in Tokyo coming from several established companies like SEGA, Koei, and Square-Enix. Shimizu and Koizumi jointly spearheaded their first project, Donkey Kong Jungle Beat. This was followed in 2007 by the release of the critically and commercially acclaimed Super Mario Galaxy. After the release of Super Mario Galaxy, Koizumi was promoted to manager and producer and officially opened Tokyo Software Development Group No. 2.

The Tokyo group had veteran game developer Katsuya Eguchi as its general manager, who also oversaw development operations for the Kyoto Software Development Department.