The remake of Super Mario RPG is not a very long game by today's standards, but things don't actually end when many might think they do after the final battle. One of the biggest alterations between the original title from 1996 and the new 2023 remake of Super Mario RPG is the addition of new post-game content. This gives Mario and his friends an additional challenge of rematches against seven of the bosses in the game, but, of course, now they are much more powerful in preparation for their second chance at victory.
https://screenrant.com/super-mario-rpg-post-game-bosses-ranked-difficulty/