Ready Player One
Full of great trivia, villians, romance and battles, READY PLAYER ONE may particularly appeal to folks like me who spent their teenage years in the 1980s, as much of the tests and battles recall the inventor (and, presumably, author Ernest Cline) favorite movies and videogames, which are all from the 1980s. (One test involves reciting all of Matthew Broderick's dialogue from War Games, for example.)
If you aren't a fan of videogames, this might not be your favorite book but it's still quite enjoyable. If, on the other hand, you spent a decent amount of time in the 80s playing Tempest, Defender, Joust and other games, you'll truly love READY PLAYER ONE. As a debut novel, it's a great sign of things to come.