I picked up some previously played games for the 360 today.

Does microsoft have a service where we can purchase instruction manuals?

What game is it?

as far as official game manuals, I'm not aware, but if you are looking for comprehensive game instructions try www.gamefaqs.com

Lost Planet, Oblivion, Crackdown.

I think thats all

Good choices. Good to less good in this order: Oblivion>Crackdown>Lost Planet

Warning: If you haven't played Oblivion before, it will fuckin' blow you away. The second you get out of the sewers you realize you are literally free to do whatever the hell you want and write your own story, it's such a well pronounced transformation, so well done.

Definitely one of the most memorable moments in a game I've had in recent years. 

Yes, oblivion is top-notch. Get the Shivering Isles expansion if possible. Tons of DLC for both OB and Crackdown - LP, I am unsure of.

Manual-wise, you could posibly call and order one from Bethsadia. The Oblivion manual is one of the best-ever manuals in history, as Bethsadia has always made great manuals. The Oblivion manual clocks in at over 50+ pages.

Crackdown and LP's manuals are not very large.

Oh! You might want to call up a local game renting store and see if they have any. Many titles do not feature the instruction manuals (since they always get lost), and some are taken out. Try a Blockbuster or some store of that sorts.

Im enjoying the hell out of crackdown right now, and oblivion was always top notch, played it on PC last year, it is godly

Have you tried Fallout 3?

I compare it to Oblivion (for my friends as they have mostly played Oblivion) only set 3000 years in the future after a nuclear holocaust :)

^^
why did you bump such an old thread????

lol - oops, was it? I did a thread search as I didn't want to duplicate an existing thread, and saw the title of this one and clicked on it... My brain hasn't turned on yet I guess, was thinking those games seemed kinda old :)