This was from the original codes page from Mount Moon complete in its entirety alongside all of its typo-ish glory.
99 OF OF THE SIXTH ITEM
To get 99 of the sixth item, go to your items by pressing start and put something in the sixth item slot. Then go to Viridian City and talk to the by the gym that shows you how to catch a weedle. When he ask if your in a hurry say no and he will show you how to catch a pokemon. Then fly to Cinnabar Island and when you apear infront of the pokemon center don’t move down or left, just move right all the way over to the water then surf. Next surf up and down. Stay closest to the land and you should run into a Missingno.(WARNING DONT CATCH IT. IF SO THE GAME WILL MESSUP AND DELEAT POKEMON.)Instead run to land and look at ur sixth item it should have a (symbol)9.It means you have 99 of that item. You could do this with nuggets and sell them for 999,999 dollars but if you wont more money keep 1 nugget and repeat the process. Missingno is part of the system is looks like a bar code when u see it. Missingno is the save,grapic,pokemon control if cought the game will messup! P.S. POKEMON CHEATS AND HINTS have more codes now
Get 3 Potion at the start
To get 3 potions at the start follow these instructions: 1:Go to the PC in your room.Go to withdraw.Get the potion. 2:Go to the next city.Go by the tree next to the bush.Press A. 3:Talk to the guy on your way to the city.
Find the power plant
To get to the power plant head to the rock tunnel entrance.When you get to the patch of grass go upward then take a right.Then go foward till you get to the water. Surf.Go downward till you run into a steap hill, take a left, keep going left untill you find another steep hill. Then go upward.You will see land go upward and you’ll see a big building. And that’s your power plant! Watch out for voltorbs that look like pokaball item things!
Skip seafoam islands
To get to cinnibar island without going through the tirering seafoam islands,simply fly to your home town and surf to cinnibar.Now you can resserect your fossils!
Cinnabar gym cheat
This one lets you get to the gym leader without having to fight the other trainers. When you walk through do you notice the computers. Go up and talk to them. It lets you open the gates by taking a quiz. Just do this all the way through. It’s also a great way to test your knowledge of pokemon.
Easy way through Silph Co.
(must have a pokemon that can dig) Go to 5th floor,go left till u see some trees go down;DO NOT GO ON THAT PORTAL.Go down the narrow path talk to the team rocket,beat him,now go in the portal,after you were tranported, go back in the portal.Go down 1 step then go right and pick up the pokeball(card key).Now dig out, heal your pokemon at a center.Go back in Silph.Go to the 3rd floor;beat the rocket go in the left (card key)go in portal……..Beat your rival talk to the other guy in the room get a Lapras………..Go in the other portal………………….go down & beat rocket,, if your pokemon are in good health use the card key and fight giovanni in the room and then talk to the guy……………………….if your pokemon r not in good health go back in the portal.. go back in the other portal, come out of the room goto the elevator go to 5F go back down that narrow path go in the portal…..go up through the two doors go left go down the more narrow path and talk to the lady in the room……….. then you’ll have to fight the rocket heal your pokemon again and follow the steps before i wrote ……………………..if your pokemon r not in good health THE END
Free coins
When your in celadon city and u have collected a coin case from the local diner, go to the game corner and search behind all the people playing the slots . You should get 10,even 20 game coins that just appeared behind the people that are playin the slots. You should get around 90 game coins or so all together.Have fun and good luck!!!!
Get Eevee
Go to Celedon city from there go to the back of the Celedon mansion. Enter the mansion and proceed down the stairs until you see a small room. Enter the door and you’ll see a pokeball. Inside is the Eevee.
Catch Pokemon From Safari Zone
To catch pokemon from the Sarfri Zone…. Go in to the Sarfri Zone & walk back out then fly to Cinnibar Island Surf up & down when you are half on land half on water and you will see pokemon from the Sarfri Zone!!
Transform Missingno.
Do the Missingno. cheat and fight aggainst a level 0 Missingno. catch him and there’ll be another one, catch that one and it will transform into Ditto! Or catch one missingno. at level 0 and raise it one level and it will transform to a Kangashkahn!
Random Seafoam Island Tricks
Pokemon that evolves to Kangaskan
Talk to the man in viridian city and tell him no.fly to cinabar island and surf up & down the right sidi of the island on the blackish line it may take a while but you will find “#M*”.he will evolve to kangaskan on your first battle.
Notes:do not hurt him one hit will kill him.
Catch Missingno.
(Warning this will mess up your game!!) First You have to have been to Cinnabar Island. You Have to know how to surf and fly. What you do is talk to the guy in Viridian City that says “Ah I’ve Had My Coffee and now I Feel great.” He will ask you Are you in a hurry say no. Then watch him catch a pokemon. After that fly to cinnabar island and surf up and down the black line on the right in the water. Soon you will find missingno. Pokemon over level 100
Fly to Viridian city. talk to the old man who needed his coffee. When he asks you “are you in a hurry?” say no. hell show you how to catch pokemon. after that fly down to Cinnabar Island and wim along the right most side of the island. swim where it looks like your half on land and half on water. there you will fight pokemon over level 100.
Surfing and Fishing in the Gym
When you enter viridian gym, go right in front of the statue that says viridian city gym leader: Giovonni winning trainers: gary. press start annd go to pokemon. choose a water pokemon outfitted with HM 03 surf and surf in front of the statue you can also fish in front of it
Sabrina’s Gym
Take the teleport by the man with glasses. Then take the teleport to your left. Take the teleport below you. Take the one at your left. Take the one at your left again and their you are a Sabrina.
Catch Mewtwo in Ultra Ball
To capture Mewtwo in an Ultra Ball take at least 3 Ultra Balls with you to the Unknown Dungeon.(You must be a League champ first). Go find Mewtwo and Save the game before you assume battle mode with him. He is an icon that stands alone on a island. The icon looks just like Nidorino’s icon and Snorlax’s icon when they are in your list of 6 Pokemon. Enter the battle and have a Pokemon that is outfitted with the skills: Thunder Wave, Sleep powder, and Ice beam. Have a Pokemon at least at level 40. Do not worry Mewtwo is much, much stronger than you think. If Mewtwo is at level 100 he is more like your first PKMN at level 105. The thunder wave works best if you weaken him alot. After weakening him and Paralizing him use an Ultra Ball. I don’t think you needed 3 Ultra balls because when he is weak and paralized he is your’s in one shot!!!
Clone a Pokemon
There are actually two ways to clone a pokemon. The First Way is: 1.Go to Viridian City and talk to the man who shows you how to catch a pokemon. 2.When he asks you if your in a hurry say no once the say yes once. 3.Put the pokemon you want to be cloned as your 4th pokemon. 4.Fly to Cinnabar Island and surf on right side coast and catch an M’ at level 0. 5.It will still be there so catch it again it is a ditto. 6.Go to your pokemon box and release the M’ and withdraw the ditto. 7. The Ditto should be the same as your 4th pokemon.
The 2nd way is easier:
1.Hook up with a game link cable to your friends game to trade. 2.If 1 person has a pokemon that you want do this. 3.The 1 that doesn’t have the rare pokemon trade a rattata. 4.When the trade is almost done the person who originally had the strong or rare pokemon when the screen says waiting turn your gameboy off before it says “trade complete”. 5.Then the person with their gameboy on waits till it says”trade complete” and then turns their gameboy off. 6.When you turn your gameboys back on you should both have the rare or strong pokemon and the common pokemon should be gone.
The Phantom PC
Go to the celidon city hotel. then go to the corner and then go down 2 spaces and up 1. Then you press “A” and there is an invisible PC that you can use just like a PC in a pokemon center only you can walk throu it.
After that blast from the past I’d like to share some additional codes that let you catch shiny pokemon.
There are some interesting glitches and “exploits” that allow players to get things like shiny pokemon from the earlier generations that don’t require any unofficial hardware. Here are some “real codes” to get certain rare Pokemon.
Pokemon Gold/Silver/Crystal (Including the Virtual Console Releases)
How to get a shiny Ditto
Get the Gyarados from Lake Rage from Gold/Silver/Crystal and then trade it back to Red/Blue/Yellow and teach it Mimic via TM31. Then fight a wild Ditto, have the Ditto transform into your Pokemon while you use the move Mimic on Transform. Have Ditto mimic your transform and get Ditto to use Transform again and catch the Ditto. The Ditto now has the Diversification Values (Or DVs) to make it Shiny because it copied them from the Shiny Gyarados. It may not look shiny in Red/Blue/Yellow because they didn’t have shiny pokemon in them, though when you send the Ditto to Gold/Silver/Crystal, the Ditto will be a shiny blue Ditto.
The neat thing is this will work with the virtual console release of the games as they didn’t fix any of the bugs inside Red/Blue/Yellow.
Pokemon Scarlet/Violet
How to easily get multiple Shiny 3 Segment Dudunsparces
