Skat is a four-letter type of card game that originated in Germany in the early 19th century. It is a three-player game that is played with a 32-card deck and is considered to be one of the most popular card games in Germany. The game is based on bidding and the players must try to win the highest number of points by taking tricks. Skat is also known for its complexity and strategy, making it a challenging and exciting game to play.