I suppose a cartridge of just SMB1 is somewhat rare; anyone I knew who had an NES had the Super Mario / Duck Hunt multicart, or very occasionally Super Mario / Duck Hunt / Track & Field triple game cartridge from the bundle that included the Power Pad.
I suppose a cartridge of just SMB1 is somewhat rare; anyone I knew who had an NES had the Super Mario / Duck Hunt multicart, or very occasionally Super Mario / Duck Hunt / Track & Field triple game cartridge from the bundle that included the Power Pad.