You have turned into a zombie due to an unknown virus. Infect all other people by the virus you are infected with. You are about to die but before you die, you will be challenged to kill a certain amount of people with vomiting, coughing or coconuts. You will earn more money by killing more people. Get close to a target and hit the z x or c key to vomit, cough or coconut which will infect the target an eventually kill him. You can buy upgrades for your virus which are more effective on the enemy. Clear all 16 levels and kill as much people as you can.