Sony's announced something called Xi, a project it's terming "the world’s first console-based Alternate Reality Game".
"The adventure takes place in a series of secret areas in Home – and beyond – changing day by day, week by week, in real time," the company said in a post on the PS Blog.
"Anyone with a PlayStation 3 can join in the fun for free – in English, French, Italian, German or Spanish.
"To discover the mystery of Xi, simply log on to PlayStation Home and look for the graffiti on the wall in the main square. Find that, and all will be revealed…"
Holy go into Home for the first time since the day it launched, Batman! Get to it!