A 2K forum poster holding a random blacklight session with his friends discovered scrawled secret messages on the three BioShock 2 posters that were packed in his special edition. Creepy!
When I first unwrapped my special edition of BioShock 2, I didn't give the posters a second thought, leaving them bundled up in the box, completely forgotten. 2K forum member JRoch put them on his walls instead, and while messing about with an old blacklight, discovered scrawled messages on the posters, just like the ones you find in the game itself.
As proof, another 2K forum-goer posted these images, along with a video that can be found at PhotoBucket.
I tore open my box, unfurled the posters excitedly, and realised I don't own a blacklight. Why do I not own a blacklight?
Special edition Propaganda posters [2K Forums - Thanks Cailin!]