Nintendo Research & Development 4 was a division of the Japanese company Nintendo. It was founded in 1983.

It was reorganized and expanded into Nintendo Entertainment Analysis & Development in 1989.  

Games by Nintendo Research & Development 4:

1988

Platform Game. Mario, Luigi, Toad, and Peach, Princess Toadstool of the Mushroom Kingdom, travel to Subcon and defeat Wart.

Platform Game. Mario and Luigi rescue Peach, Princess Toadstool of the Mushroom Kingdom from Bowser, King of the Koopa.

1987

Action-Adventure RPG. Link has to wake a sleeping Princess Zelda to prevent Ganon's return.

1986

Platform Game. Mario rescues Peach and celebrities from Nippon Broadcasting System's All Night Nippon from King Koopa.

Platform Game. A platform game wherein Mario rescues Peach from King Koopa.

Platform Game. Mario rescues Princess Toadstool from Bowser, King of the Koopa.

Action-Adventure. Link rescues Zelda, the Princess of Hyrule from the evil Ganon.

1985

Platform Game. Mario and Luigi rescue Peach, Princess Toadstool of the Mushroom Kingdom from Bowser, King of the Koopa.