Rent/buy this game. It is absolutely incredible... The campaign is very long and very bloody/gory.
I finally finished Infamous, it's tied with my favorite game of 09 with Killzone 2 for now, can't wait for the 2nd oneYa, I played the inFamous demo too.. I like it! like have a gun, with no gun! haha. was a bit too hard for Erika though.
X has an easy mode so you can just slice and dice everyone! lol plus its a little bit of Tomb Raider thrown in..