Nintendo Entertainment Analysis & Development or Nintendo EAD, formerly Nintendo Research & Development 4, or Nintendo R&D4, was the largest division inside Nintendo until it merged with Nintendo Software Planning & Development in September 2015, becoming Nintendo Entertainment Planning & Development. It was preceded by the Creative Department (クリエイティブ課 Kurieitibu Ka?), a team of designers with backgrounds in art responsible for many different tasks, to which Shigeru Miyamoto and Takashi Tezuka originally belonged. Both served as managers of the EAD studios and were credited in every game developed by the division, with varying degrees of involvement. Nintendo EAD was best known for its work on games in the Donkey Kong, Mario, The Legend of Zelda, F-Zero, Star Fox, Pikmin, and Animal Crossing series.