👉 In computer graphics, an "overlay" is a term used to describe a part of another object that appears on top of it. The term comes from the fact that the objects are overlapping and overlapping parts can be invisible or seen only through a certain angle or perspective. For example, in a 2D game scene, if you have an enemy character that is moving towards you, but you can't see its exact position because it's moving on top of your player character, then you might say