An engaging, fun set of books—kept me interested, made me excited to read more, and so on. It spurs a bit of thought about what it means to be alive, but mostly it was fun and lighthearted entertainment. I especially enjoyed the fourth book (Heaven’s River), and liked the third book (All These Worlds) the least, but all of them kept me reading. I read them back-to-back, and they essentially felt like a single book to me, so they only get a single entry.