That need to kill some Zombies

Ok, i am going to make this as short as humanly possible ( by including all that ) i am 16 years old (17 next month)full-time student, With a casual job that hasn't provided any hours in the last 3 weeks. i live in my own flat where i have to pay rent and utilities. (all without family help) now i do usually have money left over after paying bills and shopping but this month is proving difficult to get any funds together. and i am really craving for a new survival game, this brings me to my point. If anyone could spare a version of Day-Z i would love you as much as one internet stranger loves another.