This is going to be short because nothing I can say will give this book justice. Btw, I read this for 6 hours straight yesterday. I NEVER read that long of a time for a book. I was hooked. 
 Even though I DID give this book 5 stars, the abrupt ending and the revealing of Four's name took off points in my book (haha get it..no). That name just ruined him for me, lol. No offense to people who have that name. 
 My favorite part was the ziplining part. It was described so perfectly and you could actually feel the dystopian feel in that scene. It felt so real and exhilarating. 
 Some parts were unnecessary and were just fillers, even though they are great and fun to read fillers. Some parts were just plain gory and violent. In the last 75 pages or so there is just one tragedy after another coming up so abruptly that you don't even get prepped for it. 
 All in all, this book holds an imaginative story and a great plot. At first I did find many similarities at the beginning to you-know-what when I was first getting into it, but as the story progressed it branched out into it's own unique novel, and those similarities didn't matter at all anymore. It became a whole new thing. Can't wait to read Insurgent. 
 NOTE: I really feel like all the negative things I mentioned should deduce at least one star, but I couldn't bring myself to give this any less than 5 stars. Even through all these flaws, this book still remains close to my heart and it's unforgettable for me.