A card game is a type of game that uses playing cards as the main component. There are many different types of card games, and some of the most popular ones include Skat (4 letters), Euchre (6 letters), Ecarte (6 letters), and Piquet (6 letters). These card games all involve 32 cards and require players to use strategy and skill to win. Skat is a German trick-taking game, Euchre is an American trick-taking game, Ecarte is a French game of exchanging cards, and Piquet is a French game of comparing hands. All of these card games provide hours of entertainment and challenge for players of all ages.