They did an updated in COD BO II to add a SnapChat QR code that send you to this snapchat. It appears to be a leak of BO III zombies. Read this for more information-->http://www.theverge.com/2015/4/7/8359911/call-of-duty-black-ops-2-snapchat-easte r-egg-teaser
The snapchat says: "Listen only to the sound of my voice" with eery sounds. Anyone have the ability to play sounds backwards or slow down sounds? I think I hear an overlay.