Castle's packaging design was conceived with the main objective of creating a visual identity for the company that was more dynamic and youthful in comparison to the usual and lifeless look of malt drinks, which is what usually accompanies the product. At the same time, the package and visuals had to seem fresh and minimalistic. As a result, the visual identity of the company was developed so that each flavor could have its own color palette, unique graphic elements, and variations on the core visual identity.