I prefer books that are based off of a universe that I know somewhat. Game-fiction novels.
Diablo Books:
1. Legacy of Blood by Richard A. Knaak
2. The Black Road by Mel odom
3. The Kingdom of Shadow by Knaak
4. Moon of the Spider by Knaak
Diablo Series: The Sin War books by Richard A. Knaak
1. Birthright
2. Scales of the Serpent
3. The Veiled Prophet
Mass Effect books:
1. Revelation by Drew Karpyshyn
Halo Series:
1. The Fall of Reach by Eric Nylund
2. The Flood by William C. Dietz
3. First Strike by Eric Nylund
4. Ghosts of Onyx by Eric Nylund
5. Contact Harvest by Joseph Staten
6. The Cole Protocol by Tobias S. Buckell
Alex Rider series, all by Anthony Horowitz
1. Stormbreaker - For the record, the movie version sucks.
2. Point Blank
3. Skeleton Key
4. Eagle Strike
5. Scorpia
6. Ark Angel
7. Snakehead (currently reading, at page 144)
Gears of War:
1. Aspho Fields by Karen Traviss
Warcraft Series: War of the Ancients
1. Book 1: The Well of Eternity by Richard A. Knaak
2. Book 2: The Demon Soul by Knaak - Haven't gotten to read this one yet
Starcraft:
1. Liberty's Crusade by Jeff Grubb
2. Starcraft Ghost: Nova by Keith R.A. DeCandido
Jeeze. Long list. I've also read Harry Potter, up until the latest 2 books (lost interest). Sorry for such a long post, but since none of these series (minus Harry Potter) were mentioned, I thought I would.