From Renegade Game Studios. More devious and powerful enemies of the Power Rangers have arrived with destruction in their wake! Astronema leads a vicious assault on Earth, accompanied by her merciless lieutenant Ecliptor, while Mesogog the dinosaur-human hybrid commands his own deadly majordomo Elsa, as well as Tommy Oliver's cyborg nemesis Zeltrax. This is an expansion. Power Rangers - Heroes of the Grid is required to play.