Uh... Maybe it's just because Prototype, as a whole, is the action game of my dreams - I'm serious, every single feature and concept in the game is something I've wanted for a long time - but by the time I'd gone through the story missions, I'd spent so much time deviating, playing around, doing side missions, and getting into pointless, unending, three-way battles outside hives for no reason, that I was nearing 20 hours playtime. I just really like that game, to an unreasonable degree.
And I still haven't found my last bloody Web target! I've ran up and down the damn island so many times, and broken into so many military bases, I've lost count. Fucker's invisible.