Pairs: Princess and Mister Whiffle Deck

The Princess and Mister Whiffle is a strange book by Patrick Rothfuss and Nate Taylor. It is illustrated in the style of a children's book, but it's certainly not for children. This limited-edition Pairs deck draws on characters and themes from that book, with whimsical yet dark imagery. The rules also contain a bonus game, called Kitty. 

• Theme: Macabre Children's Book
• Art by: Nate Taylor
• Variant Game: Kitty
• Download the Princess Deck Rules (PDF, 1.1 Mb), including the rules for Kitty
• Download the Pairs Companion Rulebook (PDF, 5.6 Mb)

Pairs is a "New Classic Pub Game" featuring an unusual deck of cards. The deck has only the numbers 1 through 10, with a different number of each card: 1x1, 2x2, 3x3, and so on, up to 10x10. 

In the basic game, points are bad, and you score points by getting a pair. So, if you have a 10, there are 9 other cards that could pair it up, and you'll get 10 penalty points if you do. Players take turns deciding whether to take another card, or fold, trying to avoid scoring points. When you fold, you have to take points, but only the smallest card in play.

Kitty is a bidding game in which players play cards from their hands to win cards from the center (the "Kitty"). It's for 4 players, but has variations for 3 to 6 players. 

Pairs was designed by veteran game inventors James Ernest and Paul Peterson, and released in October 2014. There are many different art decks to choose from, but they all work for the same game (and many variant games!)