Doraemon/Codes

World Select Code
Normally when you begin a new game, you start with World 1. You can choose which world you start from by using the following code:

To begin on World 2, press once. To begin on World 3, press twice. Then press and hold and press.

If you press a third time, the count will start over at World 1, and you can continue to press  to chose a particular world.