Cards Against Humanity Cards Against Humanity is a party game for horrible people. Each round, a rotating Card Czar plays a prompt card and the other players each select a response card from their hand that best matches the prompt. The Card Czar then picks a winning card, giving a point to its player. The cards are designed to be offensive, vulgar, or cynical, making the game great fun, but inappropriate for children (or anything you would consider "mixed company").
The base set is a print-and-play game, which is also available for sale. There have been several expansions (adding cards, but not changing gameplay) which are not available through their website.