Input (grade 13): In Red Faction: Guerrilla, the player takes the role of Alec Mason as he assists the Red Faction to disrupt and overthrow the oppressive Earth Defense Force (EDF) on Mars.
Output (grade 12): In Red Faction: Guerrilla, the hero, Alec Mason, can run, jump, steal vehicles, and use weapons to explore the open world of Mars and fight the EDF (Earth Defense Force).