Well, I don't exactly know WHEN it was created...
But Shigeru Miyamoto created it.
Super Methane Bros. was created in 1993.
Super Mario Bros. was created on 1985-09-13.
Super Buster Bros. was created in 1990-11.
Super Mario Bros. theme was created in 198#.
Super Smash Bros. Brawl was created on 2008-01-31.
New Super Mario Bros. was created on 2006-05-15.
Super Smash Bros. Melee was created in 2003-01.
Super Mario Bros. Crossover was created on 2010-04-27.
New Super Mario Bros. Wii was created on 2009-11-11.
Masahiro Sakurai, who also created Kirby.Nintendo created Super Mario Bros.
The Super Smash Bros. Franchise was created by Masahiro Sakurai. Sakurai also created Kirby and his games.
Nintendo