Codes
Some of these codes have not been tested because i was afraid they might erase my perfect game.And finaly once i did get my red and yellow versions i didn't feel like even trying the codes.When i say perfect,i mean PERFECT.You see,I've never ever lost a pokemon match,some people out there might think they can beat me,i have one thing to say to that.HAHAHAHAHA!!!!!Not only do i have practically invincible pokemon(I used to play 24/7)I've also got all 151 pokemon.(My friend gave me mew)I mainly use this game for batling and i use my others for playing.
Duplicate pokemon
This could seriously mess up your game and it may not work, so use with caution: Here is a code that you can use to duplicate Pokémon! Set up a trade with the Pokémon that you want to be multiplied and any other Pokémon. That other Pokémon will be erased. Say I wanted to multiply Articuno, I would set up a trade with someone and trade them my Articuno. They would trade my anything that they didn't want. Near the end of the trade It says: Waiting... and Trade Complete! When it says Waiting... get ready as soon as it disappears off that screen shut the gameboy off that is trading the one to be multiplied. The other game will say Trade Complete! Shut that GB off. Both People will now have that Pokémon!
95% Fishing Catch Rate
Use the SUPER ROD, and when it says "Ash used SUPER ROD", turn the pad clockwise really fast. It works 95% of the time.
MissingNo.
This cheat has been confirmed to mess up saved games. Players have had to restart their games and lost all their saved info. First, go anywhere where you can trade Pokémon with a computer trainer. The best place is Cinnabar Island Lab because there are many people to trade with there. Trade with anyone then go outside and do the "Safari Zone" trick. (Go onto a Pokémon with surf and swim along half-land and half water, the shore.) Continue along the whole shore until you get in a battle. The screen will be black for about four seconds, then you will fight the Pokémon!! His name is MissingNo.(with a period). He is on Level 80 and his picture is a blur. It is hard to catch him, but it can be done. When you do catch him he does not appear on the pokedex though. Here are the following glitch effects which occur after catching him. After a while the music will change. If he is in your party, the picture of Ash will be flipped and the Pokémon will be messed up. Check the Pokémon league. It competely messes up everything. It shows Pokémon you never used, their levels over 200, and weird commands everywhere.
OR
This way is more simple,and probably works better too.What you have to do is go to viridian city,go to the guy who asks you if you want him to show you how to catch pokemon.When he asks you if your in a hurry,say no.He'll show you how.After that just fly to cinnabar island and surf on the right side where your half on land and half on the water.You'll aventually get into a battle with missingno. or this m guy who is always at level o.when you get into one of these battles ,what ever item you have in the sixth position get cloned like 129 times,and you can also get into fights with pokemon higher than level 100!
Seafoam Islands Cheat
Go to area of SAFARI ZONE where the particular Pokémon you have your eyes on resides. (e.g.,TAUROS) Run around in that area until the time runs out Head straight to SEAFOAM ISLANDS and SURF just along the edge in the water (up and down on the coast) and SAFARI ZONE Pokémon from that particular area will attack!
Master Ball Cheat
Using a Great Ball(Some websites say it works with any ball but it doesn't), press up and B at the same time as soon as you see the ball flying toward the Pokémon. Let go of up and B when the Pokémon gets caught in the ball. The Poké Ball acts as a Master Ball only if the Poké Ball doesn't miss.
Better Chance Of Catching Safari Zone Pokemon
When you throw a Safari Ball, the instant you see the ball materialize, start rotating the pad from the left in a counterclockwise motion at a semi-slow speed. I have been able to catch the most difficult Pokémon in the Safari Zone multiple times. It's not 100% effective, but it is in the 80% area, and the ones that escape the ball and run away, I usually catch the next Pokémon right away. I want to be sure this is a legitimate trick, so I call on everyone to try it on your GBs in the Safari Zone.