Player engagement factor

1. Game Difficulty vs Player Skill (Gamification Player Progression Tips)
2. Open World vs Closed World (Player-Centric Gamification Tips)
3. Rewards in Gamification: Extrinsic Vs. Intrinsic (Cognitive Perspective)
4. Game Performance vs Player Performance (Gamification Player Progression Tips)
5. Cooperation Vs. Competition in Gamification (Insights)