Foundational game design theory covering MDA framework, player psychology, and balance principles.

• Explains the MDA framework (Mechanics → Dynamics → Aesthetics) and core engagement loops with fast feedback, clear causation, and rewarding outcomes
• Covers flow channel theory for matching challenge to player skill, Bartle's player types, and self-determination theory (autonomy, competence, relatedness)
• Details reward systems including intrinsic vs. extrinsic rewards and scheduling strategies (fixed ratio, variable ratio, milestone-based)
• Provides balance principles for mechanics, economy, difficulty, and competitive fairness, plus troubleshooting guides for common design problems
• Includes design checklists for pre-production, production, and polish phases