I had two dreams before, and I made the connection to this game for causing one to be scary.
We started out crossing a bridge heading home, but with extra people for some reason. We start crashing through signs saying such things as "DETOUR" and "TURN RIGHT" and other things very ominous. We eventually ramp off of some things, landing in a big, barren, boxed in area with a large gray facility taking up most of it to the left. We begin exploring the parameter when zombie big, decaying guy attacks us (I related him to a zombie genie with blue eyes) I yell for everyone to find a way inside while I keep knocking out chunks of him, eventually sticking him part way in a fence by hitting him hard enough. At the same time, giant bug things (also with 6 blue eyes) started attacking me, which I attacked also. They were talking in moronic teen talk, which lead me to believe there had been some outbreak turning people into strange things. I made it inside, and find a small gold plate with a map on the back above the door. I instruct everyone to find all of them, and head upstairs. Another monster attacks, and I don't remember after that.
How I related the above dream: Scary, weird monsters attacking without weapons. It's also why I thought it was so scary, I suppose, when I got them away with my fists...