Lately I've been playing several shooters, and  I decided to mix things up. I want to buy a single player game with a longer campaign and/or high replay value. Any suggestions will be appreciated.

Fallout.

Viva Pinata! 

Or you will be forever dead to the dsister clan. 

I hadn't thought about that one. It also has a good multiplayer. I'll considerate, thanks.

Mass Effect 2 or Assassins Creed: Brotherhood

Miranda's ass is > then all so Mass Effect 2 wins :P

nuff' said

Lol hey as long as we're derailing with nice pics right? :P

Here, I'll help you out

Step 1: go here http://www.amazon.com/

Step 2: in the search bar, type in "Patapon 3"

Step 3: Press 'go' or alternatively hit 'enter' on your keyboard

Alright, now you should be here. If yes, good. If no, repeat steps 1-3 until success

Step 4: Click

Step 5: Press pre-order on the side of the screen

Step 6: Go to checkout and buy (preferably >300 copies)

Step 7: Celebrate, you're awesome

^^^ Lol @ Square Enix. I'm only looking for Xbox games though.