Sponge Bob Squarepants: SuperSponge Codes -

Secret levels:
Get the following amount of Golden Spatulas in a chapter in order a secret level for that area.

Chapter 1: 60% of the Golden Spatulas
Chapter 2: 70% of the Golden Spatulas
Chapter 3: 80% of the Golden Spatulas
Chapter 4: 90% of the Golden Spatulas
Chapter 5: 100% of the Golden Spatulas