Doppelkopf

Doppelkopf is a trick-taking card game for four players, popular in Germany, especially in Northern Germany and the Rhein-Main Region. The game has a long history dating back to the 18th century, with early forms being played as Schafkopf, and has undergone many changes and variations over the years. Official rules exist, but numerous unofficial variants are played, and players often adopt their own house rules.learn more on wikipedia