buy them at walmart
you can't without cheating
use a game shark
sorry, theres only one per game.
you need to buy a master ball or find one you cant make a master ball
Cheat but to get more master balls you can get some from other games all you do is make a Pokemon hold the master ball and trade it to firered and boom you get another masterball.
no you have to get master balls on other firered games attach them to Pokemon and trade them on to your acountTo get more stars in fire red you can get it by doing Pokemon jump & get a 100 or 200 jumps
you have to win a lottery with 5 exact numbers sup piece out rate 4
This is the cheat (gameshark code) for unlimited master balls as long as you keep refreshing the code. 00000554000A354475830050000000 233423155230
1 word: hacking 2 words: action replay 2 more words: Game Shark
You can get only one Master Ball in LeafGreen (as in every Pokemon Game) in the Silph Co. by Giovanni. Another way to get more Master Balls in LeafGreen, is to hack your game using Action Replay (if your game is in a Game Console, because there's another way of hacking Pokemon games if they are in your computer). Hope I helped :)
Emerald as alot more features than firered and leafgreen including Pokemon contests, the battle frontier and you can catch certain Pokemon firered and leafgreen both can't get over all if you want to buy a certain GBA Pokemon version get Emerald but leafgreen and firered are good choices to that's because it includes the new sevii islands to explore and the game has a little more difficulty in it that is actually a good thing by the way.