NOTE: If you've already beaten the game you probably won't be able to do this.
A Gameboy (Original, Color, or Advanced will do)
Pokemon Red, Blue, or Yellow
You Must Have Just Defeated Misty.
If you walk right up to the Youngster, the game will lock up, so you'll have to let him see you and walk up to you.
Step 9: Tips
- You use a Pokemon that knows HM Fly or Teleport
- Bring at least 8 to 16 Poke Balls , Because Mew can be a difficult Pokemon to catch