Adult Themes: The Most Unnerving Themes for Board Games Ever Created

Some games, they're pretty inoffensive looking. Everybody loves Monopoly when they start out playing board games, but what of those board games that although presented as a fun group activity, just creep you out a little? Maybe not immediately, but when you connect it with stuff you've read in your life about godawful stuff that was real? Or maybe it just presents the dark and disturbing in a way that tries to be funny but in the end you're not sure how black you like your humour or without any sugars. These are the five darkest board games I've come across, for reasons that will become clear soon enough.