While the map is space-themed, individual levels reuse graphics and music from previous worlds (e.g., jungle, desert, or ice).
Nintendo themselves have played with this idea in other titles. Super Mario Odyssey had the Dark Side and Darker Side of the Moon. Super Mario Galaxy 2 had The Grandmaster Galaxy. But for New Super Mario Bros. Wii , the only "Other World" is the one we create through mods, fan art, and shared mythology. new super mario bros wii other world
While many mods like the famous Newer Super Mario Bros. Wii act as full unofficial sequels with over 100 levels, "Other World" focuses on a more curated set of challenges. While the map is space-themed, individual levels reuse
A small development team actually created a standalone fangame titled NSMBW: The Other World . It runs on a custom engine and features a 16-bit aesthetic. In this version, the "Other World" is a post-apocalyptic Mushroom Kingdom where Bowser won. Mario must navigate ruins overgrown with purple fungus. While not a mod of the original Wii game, it shows how the concept has taken on a life of its own. Super Mario Galaxy 2 had The Grandmaster Galaxy