It has been only a couple of months since we last saw Prototype, but Radical Entertainment's take on the sprawling open-world gameplay genre has made leaps and bounds forward, continuing to impress us at every development milestone.

Set in current-day New York, the game places you in the role of comic-book-style antihero Alex Mercer, a guy who wakes up suffering from amnesia and, unsurprisingly, has no idea what's going on. Your job is to use the many physical forms and abilities at Mercer's disposal to find your way through the world in search of answers. This much we know thus far: Alex was--or perhaps still is--involved in some kind of government conspiracy regarding top-secret biological research. It looks like someone put more than a spoonful of anger in the recipe, and now Alex is out to pay it back in spades.

Our hands-off demo of the game at Sierra's recent press event in San Francisco joins the story a little way into the action, and showcases many of the abilities that you'll unlock throughout Prototype's story.