The rules of the game, which can be played with two or more players, can change slightly depending on whether it's Indian Rummy, Gin Rummy, or Kalooki. Any aspiring player must become famirummy withdrawliar with the fundamentals, such as how to draw and discard cards. The strategic depth of rummy is its fundamental component. In addition to concentrating on their own hands, players also need to be very aware of the cards that their opponents draw and discard. Players are forced to modify their tactics in real time due to the dynamic environment created by this dual focus.