In the year 2044, Wade Watts, like the rest of humanity, chooses to escape reality and spends his waking hours in the limitless, utopian virtual world of the OASIS, but when Wade stumbles upon the first of the fiendish puzzles set up by OASIS creator James Halliday he finds he must compete with thousands of others--including those willing to commit murder--in order to claim a prize of massive fortune.
Otherworld by Jason Segel
"After the newest set of virtual reality gear hits the market, Simon can't wait to test it out. But, when his friend Katherine suddenly disappears after being seen with men from the same gaming company, Simon must decide how far in the game he's willing to go to save her"
Enders Game by Orson Scott Card
"Young Ender Wiggin may prove to be the military genius Earth needs to fight a desperate battle against a deadly alien race that will determine the future of the human race."
Warcross by Marie Lu
"When teenage coder Emika Chen hacks her way into the opening tournament of the Warcross Championships, she glitches herself into the game as well as a sinister plot with major consequences for the entire Warcross empire."
Maze Runner by James Dashner
"Sixteen-year-old Thomas wakes up with no memory in the middle of a maze and realizes he must work with the community in which he finds himself if he is to escape."