Also, since these can have a big impact on gameplay and strategy, players should be aware of the specific rules and variations that might apply to different variations of Rummy, like Gin Rummy or Insataa.kingdian Rummy. The ability to pay close attention to your opponents' moves is one of the most important components of learning Rummy. You can learn a lot about your fellow players' tactics & goals from every move they make. An opponent may be attempting to finish a particular set or sequence or be on the verge of forming a meld if, for example, they routinely remove cards from the discard pile.