As our Best of E3 2011 list shows, one of my big surprises from the event was THQ's first-person shooter Metro: Last Light.

Here is why: the publisher has released a tw0-minute video showcasing a demo from the show.

The game takes place in a post-apocalyptic Moscow in the year 2034. Humans have taken refuge underground in train stations and are fighting for power as mutants roam the city.

Last Light is the sequel to 2010 action title Metro 2033, and will debut in 2012 for PC, PlayStation 3 and Xbox 360.