Demons Don't Dream

"TYPE A:XANTH - TOUCH ENTER.
"He inserted the disk, typed the mysterious word, and touched ENTER. There was a momentary swirl on the screen. Then a little man appeared, almost a cartoon figure. The figure looked at Dug and spoke. His words appeared in type in a speech balloon above his head. 'Hi I'm Grundy Golem. I'm from the Land of Xanth.'"
Dug thought that the computer disk he got from his friend Ed was just a fantasy game. He didn't particularly like fantasy games, but he'd made a bet with Ed, and a bet's a bet. So he loaded the game and started to play.
Within minutes he was hooked on the game. And only moments after that, he had left Mundania and was standing in a forest glade in Xanth, with his Companion in Adventure Nada Naga - a beautiful Princess who just happened to be a shape-changing serpent. For a long time Dug thought that this was just an incredibly convincing computer simulation. Then he began to believe in Magic. Which was a good thing, because the prize in this Game is the Power of Magic in Xanth.
Along with Kim, another Mundane Player, Dug must make his way through the perils of Xanth on a Quest that will become more and more real as time passes, and they are drawn into a conflict between the Demon E(A/R)[superscript TH] and Demon X(A/N)[superscript TH] that wants to run the World of Xanth as well as the Game of Xanth.