DevelopersOxyGen, Australia.AvailableClick here to play Scary MathsSummaryStudents enter in how many cigarettes hypothetically smoked over six months, a year or five years and are shown positive alternatives that they could buy instead, such as a pack a day of smoking could have been spent on an around-the-world plane ticket.Format2-minute online calculator.Expected Benefits Increased knowledge of drug-related effects and harms. Evidence BaseThe benefits of this game have not been evaluated in a research study.