Sony is encouraging PS3 users to explore the HOME space with a new alternative reality game that tests your brain power with a series of cryptic messages.

The US Playstation Blog confirms the news stating that players need to "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…."

Players are tasked with deciphering cryptic messages located around the HOME space and more puzzles will be added on weekly basis.

"Seriously, if you haven't checked out Home in a while, we are now busting out new content regularly. Xi is just a part of this, though an extremely cool part of it. Check it out!" said Home's community manager.