Where did you get it from that someone thinks polyamory is a game?
When Mono says: "Playing the Game of Life with Monopoly rules." Does that mean that his life is simply a game?
Communication is basic to polyamory, communication has many aspects of game to it, communication is always based on rules. Rules of grammar, concepts etc. These rules are internalized by the participants, and they are enabling for the process. As long as they are not fully internalized, the process may be hampered by that, just demonstrating that the rules are not restrictive, they are enabling. And they are never completely fixed, they develop all the time.
And when communication is part of the foundation for poly, communication having a game aspect and being based on enabling rules, how can polyamory escape from this?
When did having some male aspects make you a male?