King's Cup is a popular drinking game often played at parties. It involves a large cup placed in the center of a table surrounded by a deck of cards. Players take turns drawing cards, each of which has a specific rule associated with it, such as assigning drinks or creating new rules. The game continues until all cards are drawn, with players following the rules for each card. The objective is to have fun and socialize, but it’s important to drink responsibly. King's Cup can be adapted with various house rules, making it a versatile game for different groups.