This seminal game design paper by Robin Hunicke, Marc LeBlanc, Robert Zubek lays out MDA as a formal approach to understanding games.
- Mechanics (the particular components and rules of a game)
- Dynamics (what happens when the Mechanics of a game are interacted with by players)
- Aesthetics (the emotional responses evoked by a player when they encounter the Dynamics)
Chemicals that effect our brains