Instructions
When You Remember the Previous Code
Turn on your ̶0;My Secret World̶1; game and click on the ̶0;Option̶1; tab at the bottom of the screen.
Tap on the ̶0;My Settings̶1; tab using your Stylus.
Tap on ̶0;Change Secret Code̶1; and then plug in your new secret code.
When You Forgot Your Old Code
Turn on your ̶0;My Secret World̶1; game.
Press all the buttons on the right side of the Nintendo DS as the game is loading.
Select ̶0;Yes̶1; when asked if you want to reset the game. The game will reset (erase completely) and you will be prompted to choose a new secret code for your new game.