Often used in game modding, game design assets, or emulator ROMs. "1A" may designate Part 1 of a multi-part archive (e.g., VG 1A.rar , VG 1B.rar ).
To give you a more accurate write-up, could you share more details? For example: VG 1A.rar
Textures, 3D models, sound files, or map data for a game (likely "VG"). Often used in game modding, game design assets,