Hm, I caught that the game XX was playing was Tetris right off the bat, but thinking on it, a lot of people might not understand the references.
My personal opinion - having just finished a (terrible) police mystery that someone had abandoned in my hotel room, I think that a full-length “novel” consisting entirely of dialogue is a disappointment and doesn’t really have the complexity or depth necessary to qualify for that category of literature. The change was thrown in even more stark relief because the last mystery novel I had finished before my unhappy experience with the hotel room find was one of P.D. James’ books, and P.D. James is one of the most accomplished english language detective fiction authors. Take a look at one of her books to see how a compelling story can benefit from clever descriptions providing the necessary atmosphere to fully represent the picture that you are trying to paint for the reader.
Actually, er, no, nothing I’ve written was ever published. Won third place in a poetry contest once, but that’s about it. Nothing I’ve written has had the professionalism necessary for published work… or rather, what I would consider asking to bring to the published world. 
And I ain’t doing that “vanity” publishing. Very, very expensive, and I’m really not that vain. Or, should I say, that vain. 
Arnold, see, this is my problem, honestly. I’ve read stories that are a lot of dialogue, and they are… well, like chinese food, you know? If many are to believed, though, it isn’t a problem with dialogue in general, but with that specific dialogue.
I will definitely investigate things further. I wouldn’t mind writing pulp, i just don’t want this to be pulp!
Writing exercise that might help you make narrative sound more natural:
Pick a small room or area in your house and write a narrative description of it, the way you’d want to read it in a book. It may take you a few tries, since it might initially sound like you’re writing a real estate description.
Example:
Throatshot stood in the doorway and stared at the freshly painted white walls with satisfaction. At least one room in the house looked nice. The track lighting and art deco wall sconces gave it such an air of elegance, even if it was marred by the cheap unmatched computer desks against the wall and the conference table covered with delivery boxes that sat skewed in the center of the room.
I have problems with description and narrative, too, so I would be glad to take suggestions on improving my writing.
P.S. I have two matching “L” shaped computer desks on their way to replace these desks! The conference table is probably a permanent fixture, though.
Granted, but pacing is important in coversation. Do folks talk like Joe Friday? Not really, so try to observe waht folks do when they have a conversation. Don’t just have the conversation, but describe it.
This is off the top of my head, so it ain’t Shakespeare (in fact it is probably overly dramatic). But I think it is good to chage-up the conversation, pauses for action, staccato bits of back and forth.
“You realize what this means?” asked Janice. Jack just stared out the window. She pressed the issue, “Don’t you?”
Jack turned to Janice, he looked more tired than he ever had, “Of course, but there isn’t much we can do about it.”
“Oh no, we can do plenty.”
“Please, Janice, don’t…”
Janice turned away from Jack and for the front door, “You don’t have to do anything, you’ll be clean.” Grabbing her coat as she opened the door she whispered “I’ll take care of it.”
“It’s not that…,” but Jack lost track of his thoughts, because he knew it was over. “Just be careful, Ok?”
Janice choked up, she didn’t want to cry in front of Jack, not over this, “Good-bye Jack.” Jack watched as the door closed, Janice on the other side.