Little has been revealed of the plotline for Supreme Commander 2 as of October 2009. A trailer for the game released at the Entertainment Software Association’s 2009 Electronic Entertainment Expo indicates that the story takes place twenty-five years after the conclusion of Supreme Commander: Forged Alliance, and centers on the breakdown of peaceful relations that the United Earth Federation, the Aeon Illuminate, and the Cybran Nation have experienced during that time, implying that war has been instigated through the deceit of some unrevealed party.