Easter eggs in games usually come with some backstory or explanation. But certain small details are darker than you may realize. And while some things may seem innocent enough, they're actually linked to a more sinister meaning. From Vault Boy's iconic thumbs up to the mental well-being of the citizens of Pelican Town, these hidden meanings will show you that sometimes you need to dig a little deeper to see what things truly mean. Here are a few game details you never realized were so dark.