The Sprite Mask is a useful tool in making unique effects such as character cards or portraits. It’s also useful in making detective, strategy, and even some logic based games. Having the ability to create Sprite Masks within the Unity Engine also relieves the need to have duplicate art assets for creating custom item effects, unique character cards, and more.
Sprite Masks are used to hide, reveal parts of a Sprite, or a group of Sprites. The Sprite Mask only affects objects using the Sprite Renderer Component that have been configured to be used with Sprite Masks.