Infamous 2

The original Infamous delivered a sandbox world wrapped in an adventure straight out of a comic book. Infamous 2 did all of that better. Players were once again Cole MacGrath and wielded all of his electric powers, but this time they started the game being a badass and only got more powerful as the game unfolded. New Marias was more varied with flooded areas and lively people, the enemies were bigger, and the two endings were so different it's hard to imagine where the series goes from here. Toss in side quests, karma, and the ability to create missions, and it's easy to see how developer Sucker Punch outdid itself.