Who needs all those gadgets, when lightning gets the job done just fine?
I'll try not to give too much away, but in short, Cole is an average person caught up in extraordinary circumstances. He is caught inside a radioactive blast for reasons to be discovered, and in turn gains superpowers. More precisely, the power to control electricity.
Throughout the game you will run around the quarantined city that was effected by the blast and do whatever it takes to either lead it's citizens to salvation, or complete destruction, based upon the players actions and decisions.
When all is said and done, inFamous is an amazing game, it's almost like a hybrid of GTA and Crackdown. As you play you unlock more and more electrical abilities and further progress through the story which is for most excellent and compelling, but i can understand for some how it could be contrived as stretching it thin or being convoluted. But all in all it's worth the money.
On the hard difficulty(which the game will promote you to if it feels your up to the challenge based on your progress earlier in the game) enemies are smart and actively try to hunt you down, taking cover and flanking and rushing, all the good stuff villains do.
The final boss fight on hard is very engaging and almost cinematic and leads to a climax that answers a lot of the mysteries, and even sets up a few more.
The graphics are on par for me, there not beautiful but I think that compared to the games full scope and scale that they are just fine.
So overall I would say that this is well worth your time if you are at all interested by this superhero title, and for those of you who just want to run around wreaking havoc on the innocent population with sith lighting, this certainly delivers.