Common Rummy Variations. Gin Rummy, a two-player game with a fast-paced gameplay, is one of the most favored variations. In Gin Rummy, the obgame hack app downloadject of the game is to line up sets or runs of cards in your hand. The point total is kept track of until one player reaches that goal. Rummikub & Indian Rummy. Played with two decks of cards and renowned for its intricate strategies, Indian Rummy is another well-liked variation.