Nintendo Research & Development 1 was a division of the Japanese company Nintendo. It was founded in 1970. 

It was closed after Nintendo's internal development groups were restructured by the then-president of Nintendo, Satoru Iwata, in 2003. 

Games developed by Nintendo R&D1:
2021
By Nintendo PTD, Nintendo R&D1 (original game). A remake of the 1980 Game & Watch game. Link whacks octoroks with his hammers.

2020
By Nintendo PTD, Nintendo R&D1 (original game). A remake of the 1980 Game & Watch game. Mario, or Luigi, juggles.

1992
Platform Game. Mario recovers his stolen castle from Wario.

1989
Platform Game. Mario travels to Sarasaland and rescues Princess Daisy from the alien Tatanga.

1983
Static-Screen Platform Game: Mario and his brother Luigi have to get rid of pests in a sewer.

1982
Static-Screen Platform Game: Donkey Kong Jr. has to rescue his father who has been caged by Mario.

1981
Static-Screen Platform Game: Mario has to rescue his girlfriend Pauline from her kidnapper, Donkey Kong.

1980
Juggling LCD Game. In the first Game & Watch game, Mr. Game and Watch juggles.
Whack-a-Mole LCD Game. In the third Game & Watch game, Mr. Game & Watch whacks moles with hammers