beat all the gym leaders then talk to professer elm and he will give you a master ball.
If you get lucky on the daily lottery corner
with action replay you can get 999 master balls
Well you can get a action replay code and use it to get 999 Master Balls
1
impossible you can't do it
CHEAT
Only one.
you cant there is only one
You get a master ball after defeating the eighth gym. You'll receive it from prof. Elm.
Using Hacks or just One given to you.
how to get to blackthorn town on heart gold
you need a ar ar means action replay