What does Katniss do that makes you know she is playing the game?

Katniss demonstrates her strategic gameplay by forming alliances, particularly with Rue and Peeta, to enhance her chances of survival. She carefully navigates the political landscape of The Hunger Games, using her skills in Archery and hunting to secure resources while also manipulating public perception through her actions and the "Girl on Fire" persona. Additionally, her decision to threaten to eat the poisonous berries with Peeta showcases her willingness to take bold risks to gain leverage against the Capitol.