I know ive read quite a few books I wouldn't mind playing as a game. Especially since you can have a author who writes 4-5 books in sequence but still hold there own individual
story line. Thats 4-5 games they could make and think of the money ... woah.
I think Tamora Pierce - The Immortals (4 books) would make a great game. Not to mention she has a few other series that are back stories for some of the other characters in "The Immortals" books. I really wish I knew how to design and make up games myself. I think it would be fun to experiment.

Or then again, why dont they make a simulation for young teenagers showing them that having babies at 13 is a waste of there teenage years??

An adventure game perhaps?
I've often wondered why there aren't shakespeare games, there's sex, bretrayal, violence, murder & good dialogue. Even a SCUMM engine style game would work, especially if you controlled multiple characters
Laertes
Use POISON with SWORD
Use POISONED SWORD with HAMLET
Hamlet
Get POISONED SWORD
Use POISONED SWORD with LAERTES
Queen Gertude
Get POISONED WINE
Use POISONED WINE with QUEEN GERTRUDE
Hamlet
Use POISONED SWORD with CLAUDIUS

Get POISONED WINE
Use POISONED WINE with CLAUDIUS
Deliver TRIUMPHANT LAST WORDS
Die
I wouldn't really want to play those games if they were completely linear. They'd just be too depressing in a "Oh my god! Why are you so retarded? This is just depressing!" sort of way.

Who Moved My Cheese? would make a great adventure game to play when you were stoned and had the munchies.
No, actually, I think that the first R6 game was true to the original (I think), and after Red Storm got bought out (or Ubisoft threatened their families), they spun off the whole Tom Clancy franchise away from the books, which is a damn shame.
And also, here's how it works in the entertainment industry. I call it Michael's Law of Obviousness:
Book -> Bestselling book -> Film -> Video game
The video game always comes after the film. The film is always a little bit based on the book, so the game almost always never stays true to the book/film. It's like a larger-scale version of Chinese whispers.

Well yes I can understand that but almost all adventure games are completely linear. Monkey Island, Sam & Max (old or new), Broken Sword and all the others essentially boil down to "Use item A on object A to progress the puzzle to object B". Item A could be a dialogue option, a gun or a piece of random bric-a-brac you stole because it wasn't nailed down (or it was nailed down and you happened to have a claw hammer or crowbar) and Object A could be a character, a lock or a pack of deadly piranah poodles but the structure is almost always static. it's just the way they're designed because having any significant branches would massively increase the production time.
The main difference for Hamlet is that you'd know at least the broad themes of the story in advance but there's still plenty enough room for creativity when the characters are depicted as being off stage.

An adventure or RPG game out of Alistair Reynold's Revelation Space trilogy would be swell. It's a top notch space opera with many different settings and characters that could potentially draw gamers in.

I'd love an adventure / sandbox / RPG set in Peter Hamilton's Night's Dawn universe (The Reality Dysfunction).
Unfortunately, I'm pretty sure that if any game studio ever picked it up, they'd turn it into a MMORPG instead. And it would suck.

The (classic) Dune series could make a great adventure and/or RPG.
Even a MMORPG in that universe is possible as it offers several fractions all hungering for power and with different interests.
That offers the possibility of quests.
The same goes on for Isaac Asimov's Foundation series and other series.
A lot of books are suitable to make an action, adventure or rpg from.
All that's needed is a good setting/universe, characters a player can bond with and a good story.

You know, seeing The Wheel of Time turn up on GOG would be nice =)

I wonder how the Lord of the Rings would be made into a video game!!! :o/

Take your pick: Wikipedia: Middle-earth in video games

I know, it was a joke. They have done, redone, and overdone The Lord of the Rings to the point of ad nauseum.

They should make a game based on the bible.
"Press A to Whip Jesus"
"Press A to Stone The Whore"