"Thanks to Radical Entertainment and Sucker Punch Productions for being such good sports. You sick, sick fucks."
He Also Did: Dennis Detwiller, the head writer for the game (but not the comics or sequel), also wrote material for Delta Green; in some regards it almost feels like a Perspective Flip of the Delta Green series; the shady governmental body operating above the law are the antagonists and the horrific abomination is the protagonist. Mercer himself shares some similarities with the Ghouls in Delta Green; from the shapeshifting and relative invulnerability to firearms, to gaining memories from consuming the brains of people.
Hey, It's That Voice!: Depending on whether or not you pay much attention to the Web Of Intrigue, you can hear various famous voice actors playing extras. Such as:
Early in the game's development, the official website had some story details that were later removed. For instance, Alex's mother would have been a central character as the CEO of GenTek. Another (heavily censored) document talks about the great influenza epidemic that broke in 1918 in the U.S.; it is hinted that influenza was just a cover story, and the outbreak was something else entirely, possibly a natural outbreak of the original Redlight virus. None of this is mentioned in either game.