Behind the credits, Mario and Luigi are shown leaving the Mushroom Kingdom and heading home.
After the credits, there is a segment in which Miss Endless (customer of Mario Grocery) visits the grocery store only to discover that Bowser and his minions work at the shop now, Miss Endless is visibly overjoyed with better service and cries out as the background changes blue and the words "GAME OVER" appear while the Super Mario Bros "game over" music plays under the end.
When the end credits end, Mario and Luigi smile and wave to the audience, evidently a good-bye to theater patrons, as they enter a pipe with the Grouper Productions logo superimposed on it.