9. Infected
Christmas shopping in New York is chaotic enough without the added inconvenience of a zombie outbreak. You play as an unnamed NYPD officer who survived the outbreak by- you guessed it- being immune to the virus that has wreaked havoc. You have a normal side-arm and a Viral gun which is used to dispatch the zombies. The standard firearm can be upgraded if you kill enough zombies in quick succession. Other weapons can be bought and appear as random drops throughout the level. A great aspect of this game was its music, featuring artists such as Slipknot and Trivium. Slipknot members can also be unlocked as playable characters which makes laying waste to zombies awesome, as well as the fact you were actually running around Central Park too.