i think you sould make an rpg version where your in a city and you need to go and find the parts for your car by looting shops and zombie boddys you can even add huge bosses and even more level upgrades! dude and zombies is epic and i love the ghraphics
another sparta tactic buy full house armor buy a grenade lancher fully upgrade it then buy a rocket turret and place it in the middle then just randomly open fire on the roman scum!!!