how to play copied import games

ok do i just play import back up games the same way i play usa backups...or do i need a ram cart......

its radient silvergun...its not a capcom/snk game so i should not need a ram cart right?
Radiant Silvergun doesn't need a Ram Cart to run however since it was a Jap only release if you don't have a Jap saturn you will need either an Avction Replay cart which has the ability to bypass country protection, a country mod switch for choosing Jap/Euro/US or you need to use satconv.exe to change the Radiant Silvergun to the same region as your saturn.