I enjoyed this book very much. It reminded me a bit of World War Z: An Oral History of the Zombie War, particularly in the first few chapters, but this book goes a little deeper into a small group of main characters, while World War Z is less concerned with following specific characters through several incidents and more concerned with the worldwide impact of the story. It's also a bit like Daemon in that an artificial intelligence takes over everything, but unlike the Daemon, the AI in this book (named Archos) does exterminate a lot of people indiscriminately, like Skynet does in the Terminator stories. The difference is that Archos does, it turns out, respect humankind very much, and in the end it seems to have mankind's best interest at heart. Each of the three is a slightly different take.