There's "lore," which if you look it up takes a thousand years to get to the actual timeline because Scott wrote it by the seat of his pants. Basically John Wayne Gacy created Chuck E. Cheese as a means to kill children, then found out he could harness the power of their souls to do Mengele-type shit with robots. Then the ghosts started haunting him so he escaped from them into a robot and was crushed to death by his own arrogance. Meanwhile the place burns down and gets rebuilt over and over because he's not even really dead, just fused with dead souls and robots and...you get the idea.
So we got vore, robots, maybe TF, serial killers, furries, creepypasta...anything else?