"Excellent, Absolutely Superb"
Summary
The game is about three alien races which overall have their own purposes for coming to earth. The first race of E.T's you play as is an race called Novus. The "Novus" are not so aliens but robots who's creators were wiped out by another alien race that you get to play as called the Hierachy but we will get to them later. The second race of aliens you get to play as are of course the Hierachy they are a "Parasite" in a way consuming every natural resource in sight which is why they came to earth. The final race of aliens you play as named the Masari did not come to earth recently but have played a role as forefathers in our history as humans. They show up in the last moment in this battle between the Novus and the Hierachy to defend Earth were as the Hierachy is trying to destroy it and the Novus are just trying to destroy the Hierachy.
That is all I am going to say as i don't want to spoil it if you haven't played it already.