When you open these in an emulator like Nestopia or Mesen, you’ll see a garish menu with scrolling numbers. But selecting "Game #54567" will always launch the same three things: Super Mario Bros. (World 1-1), Duck Hunt (with no light gun), or a glitched Tetris clone. The "99999" is a static image, not a functional index.

Since these are unofficial bootlegs, they are hosted on various retro-gaming community sites rather than official stores. Search Keywords

Due to copyright reasons, ROM files are often hosted on archival or community-driven sites rather than official stores. Internet Archive