The open house, drawing one, based on "The Open House" which seems innocent, but turns out it's actually a (very creepy) horror game. The main "antagonist" called Bob is replaced with Bobby, Horror Sans as a real estate agent basically. (Bob + bloody = Bobby...?) Turns out, he actually just wants to eat you, but doesn't mind if you buy one of his houses, as that gives him money for weapons and supplies.
Sour Apple Studios for HT CorpsPile (A company, I think?) for TOH