Cookie Run: OvenBreak features a ton of costumes that players can purchase, earn, and equip. Each costume not only provides cosmetic changes, but also grants certain small boosts when equipped. The only way to obtain costumes is to purchase them either directly at the Costume Shop or through the Costume Gacha by spending Rainbow Cubes. Players wanting to obtain more costumes will need to understand how they can earn Rainbow Cubes. Since there are so many different ways to get them, it also helps to know which methods are the best for farming large amounts of Rainbow Cubes.