a thousand other people have done the same thing for years we're just making it more convenient to have an official and more polished download for one
Viewing post in Super Mario Bros. Level Pack comments
dont think so, these levels were included in the base game for the longest time and we never got in trouble, the former creator even emailed nintendo about the game and they stated they were okay with it, apparently. But anyways these level packs are pratically glorified json files, nothing really copyrighted there.