Hmmm... To be honest, it seems a bit corny. The whole, guy-playing-a-game-and-interacting-with-the-character genre seems really...just...lame. No offense meant at all, I just feel that it's far more satisfying to read about characters that seem real...reading about a character playing a character in a game, and acting as their imaginary friend, makes it seem so artificial.
Granted, if it was pulled off well, I wouldn't mind reading it. Heck, mebbe you can change my opinion :D.