‘Agential fluidity’ is C. Thi Nguyen’s term for the ability to freely adopt and dispose of goals. There is some philosophical debate about whether agential fluidity is even possible: can we decide to want something we don’t yet want? Can we change our values? Nguyen points out that our ability to play Suitsian games suggests that we must have at least some degree of agential fluidity. In fact, he argues that since this sort of game-playing is by definition an exercise in agential fluidity, it helps us develop agential fluidity, which over the long-term can cause us to grow in autonomy, partly by helping us avoid value capture.
Nguyen, C. Thi. Games: Agency as Art. (p. 5). Oxford University Press. Kindle Edition.