Zombie Halloween World War Attack - best strategy rpg shooting survival free game

FPS zombie shooter game that combines the timeless appeal of classic action games with crisp graphics.
2054 year. Mankind is destroyed by deadly virus from africa that turns people into terrible zombies. There was epic world war, zombie apocalypse, and now you are the only one who has survived.
The world is taken over by the walking dead surfers around who devour any living thing they catch or hit, and whose bite is infectious to all humans including students, policemen, doctors, & etc.