Step by step: br Heal your team at the Cerulean City Pokemon Center br Head up Nugget Bridge br Go left until you're right in front of the first patch of grass br Take one step south and immediately press start br Use Abra (or any other Pokemon that knows Teleport) to Teleport back to the Pokemon Center br Defeat the first trainer in the Cerulean Gym br Go back up Nugget Bridge until the menu opens itself br Close the menu and Mew will appear at LV7 br br Tips: br Mew is hard to catch even in a weakened state so bring lots of Pokeballs. It took me 34 Pokeballs to make this video.