New Super Mario Bros. 4 is a side-scrolling 2.5D platform game, and a launch title for the Nintendo NX. and the sixth and latest installment in the New Super Mario Bros. series. Released on March 17, 2019 in North America, March 29th in Europe and Australia, and in Japan on April 14th. It will also be the first New Super Mario Bros. game not to include Bowser, the second New Super Mario Bros. not to include Bowser Jr., and the second New Super Mario Bros. game not to include the Koopalings.