GTA: Dawn of the Celebs
When the zombie apocalypse happened, you are doing your job as a bodyguard for a well-known celebrity. Zombies are coming at you, but you decided to stay since you are waiting for your boss. You don't want the zombies to destroy the car, so you shoot any zombies that you see. The game is played with a keyboard and a mouse. You need to defend the limousine as you know that your boss would be back. You need to make sure that none of the zombies get close. Some zombies are carrying some cash and when they die, they drop the cash. You can use the cash to buy upgrades.