In this variant, players are still able to knock if they do not have any runs or sets in their hand as long as every card in their hand is a part of a combination that includes a card from their opponent.sattaking-up. com Hollywood Gin is a well-liked variant that lets players draw from both the draw and discard piles in the same turn, adding an additional element of strategy. The game moves more quickly and is more dynamic as a result of this rule's increased tempo and unpredictable addition. Apart from these variants, there exist regional variants of Gin Rummy that have emerged over time in various parts of the globe.