While watching their opponent's moves, players alternately draw from the draw or discard pile in an effort to improve their hands. Gin Rummy's distinctive scoring structure and "game download apkknocking" idea distinguish it from other rummy variants. When a player feels they have enough legitimate combinations to finish the round, they can decide to "knock.". Players must balance the advantages and disadvantages of knocking versus keeping drawing cards in the hopes of further improving their hands, which adds an interesting layer of strategy.