What Does Easter Egg Mean?

An Easter egg is a hidden video game feature or surprise. Easter eggs are usually unlocked by using certain techniques to complete in-game tasks, entering specific button combinations or acquiring access to secret game or game file areas.

Techopedia Explains Easter Egg

Game developers often add Easter eggs with game producer consent. Unauthorized Easter eggs added without game producer knowledge or consent can lead to game recall, or the game may be re-rated to reflect hidden content.