HeckWorld Online

Heck World Online is an open world browser post apocalyptic survival game developed by H6 studios. At the beginning there are two factions, Deces (Aggressive and crave combat) and Lanari (More focused on Survival). After customizing your character you wake up and see a zombie in front of your face, suddenly the zombies head explodes. You see either a guy called Agent Hex (Deces) who wears a skull mask or a Lanari guy called Wreck who wears a helmet with visor (think Master Chief). He then teaches you the basic controls and you fight your way through zombie hordes to the Deces or Lanari base. Your game begins from there as you roam the world to level up your character.