(This review is for the entire series - I'm copying and pasting this into all the other reviews of the book.) 
 That was it? Perhaps I'm a little harsh, but after all that hype, Percy Jackson is just another kiddie adventure story of the many you could find in the library. Only difference is that this happens to have a movie deal attached to it. 
 What I really really disliked is that how Percy seems to be able to slay every monster he meets. I wasn't afraid for him as he battled monster after monster in every book. Some monsters are supposed to be larger, tougher or harder to kill, but at the rate Percy was going, there's no difference. The same with the numerous near-death-but-always-managed-to-survive experiences. Should I be worried for him? What? He's going to survive anyway and defeat Kronos even with impossible odds and all. 
 Okay, occasionally there were a little bit of sarcasm/humour injected, raising it a notch above average adventure stories and I liked how the Greek gods had a modern touch to them, both appearance-wise - Zeus in a pinstripe suit, Hermes with his cellphone, etc - and personality-wise - Apollo and Artemis always arguing, Apollo with his awful haiku's, Hades moaning about traffic congestion or something in his Underworld, etc. 
 Also, seeing that this is supposed to be a book for children, I shan't be so harsh. So, I give it one extra star. I would originally have given the series an 'it was okay'.