Highway of the Dead
This game is one of the most famous games right now because of the zombie crazes that it hitting worldwide. The rule is simple, run down any zombie that you see and you will make money. The more zombies that you run down the better, as you make more money. And stay away from those fuel cans as they are an obstacle that will slow you down once you hit them.
Don’t worry about not finishing the game early on as you can continue the game and all the money is still there. You can use the money to upgrade your vehicle later. You can choose whether you want to upgrade your speed grip, turbo, and acceleration.