In the Zombie Town, your hero crashed in a zombie infested town and he must clear the area to get parts to make a communication device to find help.
You must kill zombies in locations around town to earn money to buy weapons. Each location needs a zombie kill count to unlock, and each completed location unlocks parts to build a comm's device. Don't worry if you get killed, because you'll continue to game with your benefits from the last point. Game has a auto-saving feature, so you may continue to play the game any time you want.