There is a way you can get another master ball any pokemon game. Well not every if you had the old game boy advance with the link wire than yeah but for the D.S one you use another pokemon game and you put the master ball onto a pokemon and you trade it. Of course that would mean that person on you would lose the master ball in that game but of course the best thing about pokemon is that you can start all over!
there is no more masterballs in Pokemon platinum but not if you use cheats
master ball
no
you can not get a master ball in Pokemon platinum only the one professor Rowan gives you
with a master ball or timer ball
with a master ball
Master Ball.
After defeating Cyrus in Veilstone, he should give a Master Ball to you.
Master ball
Ultra Ball
In Pokémon Platinum, Cyrus, the leader of Team Galactic will give you a Master Ball once he surrenders his plans in his Veilstone Headquarters.
not possible