Is that Spiderman, Superman? No! It's Prototype!
Reasons :
Good : This game is about massive destruction, blood, gore, cut in two zombies flying above your head, explosions, super powers.
Alex has massive super powers that will let your jaw down, the action runs so fast that 1 sec you are fighting in the ground and the other you are in the skies running from a giant beast and being shot by tanks and APCs, you get the feeling that You Are The Prototype and you rule not them. Get GTA, Assassins Creed, Resident Evil and mix them up in a bowl. The story is ok, so is the voice acting. In the middle of this the graphics aren't very very important so they are ok, afterall gamers didn't like GTA IV graphs for PC it would be a tragedy in Prototype to have them so don't go mad about Prototype's bad graphs and think twice. Also one key factor is destructable building, the game doesn't have them and i think it's good, what would be the point of Alex's abilities if you would just play on the ground cause all the buildings are destroyed?
Bad : The games get's a bit repetitive but, not as much as Assassins Creed.
AI seem to have some... Auto-Aim in throwable objects and Rockets, also going to pursuit memories is ok but it get's to a point where you get lost in the middle of all those memories and getting tired of running into more ppl to get even more memories.
The game is good and worth buying. It brings the term Massive Destruction to a whole new level.
If you are looking for blood and destruction. you've just found the right game buy.