Rams is a European trick-taking card game related to Nap and Loo, and may be played by any number of persons not exceeding nine, although five or seven make a good game. In Belgium and France, the game of Rams is also spelt Rammes or Rems, in Germany, Rams, Rammes, Ramsch, Ramschen, Ramscheln or Ramsen, in Austria, Ramsen and Ramschen, and, in America, Rounce. The basic idea is fairly constant, but scoring systems vary. It was a widespread European gambling and drinking game that is still popular today. During the 19th century, it was introduced as Rounce in America and played with a 52-card deck without any difference between simples and doubles and with no General Rounce announcement. In the modern German variety of the game, Ramscheln, the 7♦ is the second best trump ranking next below the ace.

A card game is any game that uses playing cards as the primary device with which the game is played, whether the cards are of a traditional design or specifically created for the game (proprietary). Countless card games exist, including families of related games. A small number of card games played with traditional decks have formally standardized rules with international tournaments being held, but most are folk games whose rules may vary by region, culture, location or from circle to circle.