This is a simple top-down infinite running game in which you are a zombie (a pretty scary one!) and your job is to go around to scare (literally eat) as many people as you can.
Instruction can be found in-game or in one of the screenshots. But if you're lazy, here's the instruction: If your zombie is moving up, press the Down arrow key on your keyboard to change his direction. If your zombie is moving down, press the Up arrow key on your keyboard to change direction. Notice that if you come in contact with a person with no gun on their hands, you'll eat them, score a points! Otherwise if you come in contact with either a person with a gun or a stone on the up or down side of the screen, you lose one health. You have 5 healths to go. If you find a gun and collect it, you can come in contact with gun-people and lose no health, in fact, you'll get the score in double!