I absolutely loved Barry Lyga's first novel in this series, I Hunt Killers and I wasn't disappointed by its sequel, Game. 
 The sequel encompasses many of the same elements as the first, mainly, Jazz internally struggling with his relationship to his father, Billy, and the possibility that he could turn out like him. However, to make things even more stressful for Jazz, he has been pulled into an investigation about the New York City serial killer, Hat-Dog. On top of that, he's also struggling with the idea of having sex with his girlfriend, Connie, as he feels that it may be the trigger to pushing him over the edge. With all these dilemmas fighting for space in Jazz's head, it'd be easy to understand if Jazz would simply just give up on a lot of things. Instead, he shows just how unlike his father he is by striving to keep humanity at the focal point of his life. He wants to care and has the capacity to, and I think that's what separates him from the completely heartless, Billy. 
 The mystery aspect is more complex than in the first book with the involvement of a new serial killer and the change in scenery from Lobo's Nod to New York City. The stakes have been amped up and there are a lot more twist and turns. On top of all this mania in NYC, you can never forget that Billy Dent is still out there lurking, no doubt biding his time before coming out to join in the fun. 
 Game is a fantastic sequel and gives the reader more of all the good stuff that the first book provided. The ending will have you feeling like you've been slapped, what with at least 3 cliffhangers that leave you begging for more. This book left me with a serious case of book hangover and I'm dying for the final installment!