: While the "9000" title is a ballpark figure, these repacks typically span the 8-bit, 16-bit, and 32-bit eras, including complete sets for NES, SNES, Genesis, Game Boy, and select PS1/N64 titles.
A: Most repacks are designed for Windows. While the ROMs will work on Android or a Pi (via RetroPie), the pre-configured playlists and settings will likely not transfer. You would need to extract just the ROMs folder. retroarch 9000 roms repack
: Downloading ROMs for games you do not own is generally considered piracy and is not legal in most jurisdictions. : While the "9000" title is a ballpark