A while back me and my best friend found 2 books about 2 completely different alien species who want to take over the earth and who are fighting for it. The catch? Each book was told as the perspective of one of the 2 aliens species! So one book is the story from one perspective and the other book is from the other perspective of the other race!
This sounded very interesting and me and my friend wanted to each read a perspective and then discuss the book! The only other thing I remember about the books is that the 2 covers made 1 whole with in the bottom middle the earth with humans fighting on it and to the left the ''purple more primitive bloblike'' aliens and to the right a ''more advanced blueish alien ship from the smart aliens''.