Hero of Thera by Eric Nylund
Be a hero in the ultimate game.
Are you a top-rated gamer?
Then you might have the skills to play the Game...where players are sponsored by actual demon lords, gods and goddesses, or Lovecraftian nightmares.
Enter Thera, a real kingdom at the crossroads of many other worlds, but with all the augmented-reality interfaces, character progression, and game mechanics that players know and love.
And the stakes of the Game?
Nothing less than Creation - every world in every universe and reality.
Thus Hector Savage, gamer extraordinaire, comes to Thera. Nothing can prepare him, though, for the schemes of Abyssal Lords, rampaging barbarian ghosts, and a host of nefarious forces who want him dead - before he can even make fifth level!