I am actually wishing I picked up prototype first, because infamous is just too much fun...starting to worry that prototype might be a bit of a let down in comparison...
...I'm going to have to check out Fallout 3....I hear there's a game of the year edition coming out soon, will have to pick that up.
I was just browsing and this caught my attention, because I thought these two games had a lot in common.
inFamous is a fun game and has a pretty good story, I enjoyed playing it and I think it's safe to say that it is a better game than Prototype.
BUT, Prototype 'IS' all about the killing sprees, carnage and mayhem which I LOVED. And Protype is an open environment that doesn't have any "black-out" points like inFamous so you're able to roam New York without having to worry about your powers not working, like in inFamous where your dependent on Electrcity. (Protoype your dependent on victims, good or bad)
the power-ups on Prototype are wayyyy better than on inFamous because Protoype doesn't base its upgrades on morality. I would play prototype again (I rented both) and would MAYBE buy them once they hit that greatest hits status.
Either way their similair and you would probably have fun with both.