Players must take advantage of their combined strengths & stay mindful of their opponents' tactics in order to successfully use a Rummy Alliance for victory. Coordination of plays that optimize both playrummy.olaers' chances of creating legitimate sets and sequences while also upsetting opponents' plans is one method to achieve this. When a player sees that an opponent is almost finished with a set, for instance, they may decide to discard cards that would help their opponent while keeping cards that could help their ally finish their own hand. Increasing Winning Prospects & Developing an Exciting Experience.