Indian rummy, also known as 13-card rummy, is a popular card game that requires players to form valid sets and sequences from the cards dealt. Each player receives 13 cards, and the objective is to arrange these cards into at least two sequences, one of which must be a pure sequence, and the remaining cards into valid sets or sequences. A pure sequence is a group of three or more consecutive cards of the same suit without a joker. An impure sequence includes a joker, which can substitute any card. Sets are formed by grouping three or four cards of the same rank but different suits. Points are assigned to cards based on their face value, with face cards (King, Queen, Jack) carrying 10 points each. The game ends when a player makes a valid declaration, and the scores are calculated based on the unarranged cards of the opponents. Understanding these rules and practicing regularly can help players master Indian rummy and enjoy its strategic depth.