Llay-Llay (Chile) (AFP) – The lithe, gun-wielding warrior in a short kimono and fang mask known as “Mami Nena” in the online video game Free Fire is in reality an 81-year-old grandmother from rural Chile. From her professional gaming chair at home, Maria Elena Arevalo becomes a merciless hunter, mowing down rivals in a game in which tens of millions of players shoot it out to survive on an imaginary remote island.