Well waka-waka us sideways, we'd never heard of this one before.
Just about everyone with a set of opposable thumbs and a passing interest in entertainment has played Pac-Man: in the 36 years since its release, the classic arcade game that sees players flee a set of roaming ghosts through the tight twists of a maze has made more than $2.5 billion.
Yet in all those years, we'd never stopped to think just why those ghosts kept up their relentless pursuit. Then we stumbled down the rabbit hole that is GameInternals - the work of gamer and programmer Chad Birch.
In a brilliant article entitled Understanding Pac-Man Ghost Behavior (admit it, you're already hooked), he outlines that not only do the ghosts follow a set pattern (an opening 'scatter' of predetermined length, followed by a 'chase'), but they actually have an intelligent set of personalities based on rules.
This is how the ghosts of Pac-Man actually behave.