Let me just get this out of the way. If you're looking for a fun, engaging superhero/villain game, play Infamous. But if you're feeling contrary, or have already beaten Infamous, read on.

The Story:
Alex Mercer is infected with a plague. It gives him superpowers. He kills anything in his way.

Gameplay:
Reminiscent of a hack n' slash because of all the button mashing. The screen is always filled with enemies or civilians or both. Infected and soldiers drop Devil May Cry looking glowing orbs. Collecting these allows you to upgrade powers, though you only really use three. The cutscenes are forgettable and best skipped and the missions are standard open world fare. Consuming soldiers is an interesting mechanic but could have been fleshed out a little more. As it stands, the consume events seem like little more than "stealth lite" or just another version of a time trial mission.

AI:
The military AI is awful. You can run up the side of a building in the middle of a base (while in military disguise) and not set off any alarms. The only soldiers worth worrying about are the ones with rocket launchers. The Hunter AI is awful and relentless, but once you upgrade your powers they are taken out easily.

Graphics:
Decent, with no lag given the amount of activity on screen. There's a good assortment of civilians but the Infected, soldiers, and buildings all blend together.

Final Thoughts:
Prototype succeeds at being a violent playground. Unfortunately, you're playing here alone. The game is populated by lifeless dolls and the player character is a one-dimensional, over-powered monster. If you're looking to blow off some steam, rent this game, but I guarantee you'll be blasting through the cutscenes in no time. if you want a more immersive, replayable game, play Infamous. You get all the cool powers and you can actually shape the game world around you. It seems small but an injection of emotion could have made all the difference in Prototype.

Well, obviously i'm not going to spoil anything, but there are times in the story where the storytelling gets a bit etchy. People who have beaten the game know what i am talking about most likely.

The game is very fun there is no lying about that. But after you spend your first fourteen hours straight on it, get all the web of intrigue nodes, and all the upgrades, it seems like all there is left to do is run around and get blown up by the military (Because the game gets exceptionally harder after you beat it and continue to free roam).

But When it comes down to just a great game, Prototype is it. A unique game indeed, because you aren't going to find another shape-shifting wall-running gainer-flipping and overall badassery from any other game. Great game, but for me, not worth the buy.