Continuity mistake: When the tentacle monster rips out a chunk of Norm's chest, a large spray of blood splashes on his right-side jaw and cheek. In every subsequent shot of him, this blood is gone and his jaws are completely clean. (00:26:30)
Trivia: At the very beginning, David sits in front of his newest drawing, showing a man with two guns, a rose right of him and a tower far behind on the left side. This drawing shows Roland, a character out of "The Dark Tower", a well-known series of books from Stephen King. This drawing is shown again, some time later after the storm, and David tells that this drawing was meant to become a film poster. (00:00:30)
Answer: I'll have to answer my own question here. After doing some research, it appears that yes, "The Mist" was partially an inspiration for Konami when they created the "Silent Hill" series.