Game Dev Glossary Game dev is a complex beast, with different phases, hard-to-manage expectations, and highly specific terminology. To help you understand the jungle of game dev concepts, we’ve created a glossary that covers most terms.This page is a work in progress. Experience TypesEntertainment GameSerious GameLocation-Based GameVirtual RealityAugmented RealityMixed RealityDigital TwinMetaverse Preproduction PhaseScopeBrainstormGame Design Document (GDD)MoodboardConcept SketchConcept IllustrationFlowWireframeFunctional WireframeMockupFunctional Mockup PrototypingFeasibility StudyPaper Prototype(Rough) PrototypeBuild Vertical Slice Production PhasePre-Alpha BuildsQuality Assurance (QA)LocalizationAlpha VersionEarly AccessBeta VersionRelease VersionDLCAfter Release Other TermsUser Interface (UI)Heads-Up Display (HUD)Content Management System (CMS)Game Engine Good ReadsJesse Schell – The Art of Game DesignTracy Fullerton – Game Design WorkshopErnest Adams – Fundamentals of Game DesignRaph Koster – A Theory of Fun for Game DesignWlad Marhulets – Gamedev: 10 Steps to Making Your First Game Successful