Force Insanity was a dark-side power used to make the user's opponents insane. It was powerful when used correctly, but when used on a resistant enough person, would make the user insane. Force Insanity was incredibly corrupting, more so than most dark-sided powers. When used three times in a row, it would transform the user into the Lord of Insanity. This was not a good thing for the user. Force Insanity was taught only in the Chronicle of the Dark Side.