Crabs Adjust Humidity - Vol Six Volume Six of the unofficial 3rd-party expansion to the hit party game Cards Against Humanity. You need to own Cards Against Humanity to use this expansion. Professionally printed on linen-finish, casino-quality cards. Includes custom serialized hologram on every box, so you know you're not getting a counterfeit. Includes: 80 white cards, 32 black cards 100% compatible with Cards Against Humanity. Has no real moral compass. Do not refrigerate after opening.