you have to beat the game and talk to the professor and he will give you one
Team Magma Hideout
use gamesharkDCEEEC34AFEADC26 masterball is pc
its in a room in magma's headquarters. for more Pokemon info go to serebii.net
The MasterBall is located in Team Magma's base in Lilycove City.
You get it from a guy at the top of a big building in the first town you get to
Each Pokemon game has one Masterball..
inside team aqua's base near lilycove city
theres one materball in team magma/aqua hideout
on the legendary Pokemon that you encounter on the game thx for reading x --:)--x
Pokemon ruby's version IS Pokemon ruby.
you get it in team aqua\magma's base near Lilycove city.
You can only get one