Red Block

Red Blocks are special Blocks that appear in New Super Mario Bros., New Super Mario Bros. Wii, and Super Mario Run. They start out as Dotted Line Blocks, but after hitting a ! Switch, they become solid. In New Super Mario Bros., this effect is temporary, and the switches hit are reusable; in New Super Mario Bros. Wii, they are instead activated and deactivated by giant ! Switches on the World 3 map. In this game, they only appear in World 3-4 and World 3-5. In Super Mario Run, they work as they did in New Super Mario Bros., and appear prominently in Red Block Run.