: Stands for Region Free . While the base game is USA-coded, it has been patched or modified to run on 3DS consoles from any region.
: The "Gold Edition" specifically bundles the base game with all 10 downloadable content (DLC) Coin Rush packs (30 additional courses) pre-installed. File Metadata Decoded NSMB2GE-USA-CIA-RF-Ziperto.rar
: Indicates the game is the North American region version. : Stands for Region Free
: This is the base game featuring the "Coin Rush" gameplay mechanic. NSMB2GE-USA-CIA-RF-Ziperto.rar
Files of this nature are typically used for emulation (like Citra) or on hardware modified with custom firmware.