These are altered Super Nintendo Entertainment System game files that have been modified by enthusiasts. The alterations can range from simple cosmetic changes, such as altered character sprites or color palettes, to more substantial modifications that impact gameplay mechanics, add new levels, or even create entirely new stories using the existing game engine. A common example includes adding new characters to a fighting game or changing the difficulty of a notoriously challenging title.
The appeal lies in offering experiences beyond the original design intentions of the games. These modifications can revive interest in classic titles, provide fresh challenges for experienced players, and even serve as platforms for creative expression within the established framework of beloved games. The development and distribution of these modifications have fostered a community of creators and consumers eager to explore the possibilities beyond the original software.