This document provides an overview and description of a proposed anti-drug advergame called "Coke against cocaine". The game would feature a Coke can shooting and defeating a man doing cocaine in a skyscraper, communicating an anti-drug message. It is intended for teenagers ages 15-24 in the UK and US. The game would be simple to play, pressing forward and shooting. Legal and ethical considerations are discussed, such as ensuring it is sufficiently different from existing works and addressing potential offensiveness of depicting violence and drug use. An alternative ending is suggested where the Coke can encourages getting help rather than showing murder.