Ticket to Ride (board game) in 2016, this version is designed for children 6 and up. This version is for 2 to 4 players. The board is much smaller than the base version, connections are shorter, and game time is quicker. There are no points in this game, but players race to complete six destination tickets. The game ends when one player completes his or her sixth ticket, or if someone runs out of trains, the person with the most completed tickets wins. Two versions of this game were released. The first has a map of the United States available for purchase in North America,
Category of small categories Category of small categories In mathematics, specifically in category theory, the category of small categories, denoted by Cat, is the category whose objects are all small categories and whose morphisms are functors between categories. Cat may actually be regarded as a 2-category with natural transformations serving as 2-morphisms. The initial object of Cat is the "empty category" 0, which is the category of no objects and no morphisms. The terminal object is the "terminal category" or "trivial category" 1 with a single object and morphism. The category Cat is itself a large category, and therefore not an object of itself.