Nintento 64 Emulation ROM Image File
Nintendo brought in 1996 a console on the market known as the Nintendo 64 which used a cartridge system to store the games, this console has now been discontinued for a long time but people still play the games by using Emulation programs on there computers.
The .v64 extension is a copy of the contents of the game cartridge and is used by emulation programs such as project64 to run the games.
How to open .v64 files?
Software to open .v64 files
What are .v64 files