A “trolley game” is a type of moral dilemma or thought experiment that often refers to the well-known “trolley problem.” In this scenario, a person must make a difficult decision about whether to divert a runaway trolley onto a track where it will kill one person, or allow the trolley to continue on its current path, where it will kill five people. The game explores the conflict between utilitarianism (maximizing the overall good) and deontological ethics (following rules or duties.)