Speedrunners, you have met your match.
Speed Mario Bros. has been announced as a new sub-game for the upcoming 3DS release, Ultimate NES Remix.
Speed Mario Bros. is essentially the same as the NES classic Super Mario Bros., only sped up. Everything from the movement, the enemies, and even the music will be at a much faster pace, making the game much more difficult.
Ultimate NES Remix is a compilation of the best games from NES Remix 1 and 2 on the Wii U eShop, and will be released in North America on December 5.