The 80/20 RuleBrainstorming MethodsConsumer SurplusCore Gameplay LoopDefine the ProblemDesign by CommitteeEnvironmental StorytellingExperience DesignFlowFour Ways to Be CreativeGame GenresGame PillarsGame TropesGestaltHouse RulesIterationMagic WandMetagamesObjects, Attributes, StatesOoh, Shiny!Paper PrototypingPick Two: Fast, Cheap, GoodPlay TestingProblem-Solving ObstaclesPrototypingRisk AssessmentSupply and DemandSynergyThemeTime and MoneyUser-Centered DesignWayfinding