Codes for Game Boy Red and Blue
Missingno and Mysterio, Dulplicating items, Pokemon Higher than level 100 Code
First, you talk to the man in viridian city that shows you how to catch a Weedle and answer no. Fly to Cinnabar Island and surf up and down on the right side of the island. Soon you will run into either a missingno, a M' pokemon (mysterio) or a pokemon higher than level 100. If you want, you can catch Missingno or M', but they might mess up your game. As far as I know, catching Pokemon highr than level 100 is okay. If you battle missingno or Mysterio, the 6th item will be duplicated, even if you killed it or ran.
Safari Zone Pokemon Cheat
First, you go to the safari zone and walk around the patch of grass where the pokemon you want is found. After your time runs out, fly to Cinnabar Island and surf up and down on the right side of the island. You will run into the pokemon you want to catch eventually, and you'll be able to use other pokeballs besides safari balls.
Codes for Game Boy Yellow
None Known
Codes for Pokemon Stadium
None Known
Codes for Pokemon Snap
None Known
