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It’s Christmas time in New York City. A strange virus has appeared in the city, turning seemingly normal people into insane, violent Infected.

Rookie Officer Stevens is one of the first victims of the Infected. But unlike others, Stevens is stangely immune and doesn’t lose control. The mysterious Dr. Schaeffer discovers that Stevens’ immune blood can be used to destroy the otherwise unkillable Infected. Schaeffer creates a special “viral gun” that fills shells with blood from Stevens’ arm and blasts them straight into the Infected, causing them to splat spectacularly.

• Infect the world with your PSP – spread your unique avatar like a virus to other players’ PSPs
• Ultra-fast paced, two-gun action in the streets of New York
• Set off massive chain reactions of exploding Infected, showering the streets with blood
• Exciting multiplayer modes: Deathmatch and Team Deathmatch
• Through multiplayer victories, players spread their avatars around the real world, player to player
• Form clans with shared uniforms, spreading the same unique virus to the unsuspecting
• Immersive story injected with lots of humor features vivid characters and a range of unique and wildly imaginative environments
• Access a huge arsenal of guns and viral weapons, as well as special weapons like air strikes and fire trails that ignite chains of Infected