Players constantly try to outmaneuver each other in order to form their sets and runs before their opponents, which can make the game fast-paced and intpin up slotsense. Strategy, talent, & a strong memory are all necessary for mastering Rummy Gems. When forming sets and runs, players have to carefully weigh which cards to keep & which to discard. In order to figure out which cards are safe to pick up, they also need to observe which cards other players discard.