GameFlow: a model for evaluating player enjoyment in games.
GameFlow
Computers in Entertainment
Peta Wyeth
Designing Games for Everyone: The Expanded Game Experience Model
Gamification. Using Game-design Elements in Non-gaming Contexts
Personality-targeted Gamification: A Survey Study on Personality Traits and Motivational Affordances
Using Exergames as Social Networks: Testing the Flow Theory in the Teaching of Physical Education
Heuristic Evaluation for Gameful Design
Exergames for Adult Users: A Preliminary Pilot Study