Nintendo R&D4 is a development group given to Shigeru Miyamoto in 1984 after he proved he can consistently produce excellent games. Though they didn't have as many resources as Nintendo R&D1, R&D4 also focused on developing NES games. They ended up creating Nintendo's two most enduring franchises: Mario and Zelda. During the Super Nintendo days, Nintendo R&D4 changed their name to Nintendo EAD. Today Nintendo EAD is the largest game development faction of Nintendo.