4. Dead Space 2
Harking back to Ridley Scott's genre defining Alien, the Dead Space series has taken survival horror to the uncharted territories of space and has - rather surprisingly - offered up some of the best zombie-games in years. In Dead Space 2 - the finest moment in Visceral Games' intergalactic horror series players are taken through a terrifying odyssey of madness and terror as they have to unravel the mystery behind the origins of the undead necromorphs. While the original Dead Space is a great zombie game in and of itself, and the recent Dead Space 3 amps up the action and offers players a great multiplayer experience, Dead Space 2 stands out as the series' best as it offered players a honestly terrifying experience that is steeped in satisfying storytelling. The tone and frantic pace of Dead Space 2 is enough to keep even the bravest of players on the edge of their seat. A huge leap forward from its predecessor, without becoming lost from the plot like its successor, Dead Space 2 is a surprisingly good sci-fi horror romp, and will likely have you understanding what that Alien poster meant when it said: "In space no one can hear you scream."