Things You'll Need
Instructions
Slide the Action Replay into your Nintendo DS and insert the "Pokemon Pearl" game cartridge into the Action Replay.
Turn on the system and select the icon for the Action Replay.
Input either of the following codes into the code screen to find the Pokemon in the wild. You can only use one code at a time, otherwise your game will freeze.
For Mew:
94000130 FCFF0000
B2108818 00000000
000075B8 3FFFFFFF
000075BC 04EA04EE
000075C0 00010197
000075C4 00010119
000075C8 00000000
000075CC 00000000
D2000000 00000000
For Mewtwo:
94000130 FCFF0000
B2108818 00000000
000075B8 3FFFFFFF
000075BC 04EA04EE
000075C0 00010196
000075C4 00010119
000075C8 00000000
000075CC 00000000
D2000000 00000000
Start your "Pokemon Pearl" file and walk into any patch of grass. You will be attacked by either a Mew or a Mewtwo. You can then capture them using Pokeballs.