Game pacing

1. Game Complexity vs Game Difficulty (Gamification Achievement Systems Tips)
2. Gameplay Difficulty vs Player Skill Level (Gamification Player Progression Tips)
3. Difficulty Curve vs Learning Curve (Player-Centric Gamification Tips)
4. Game Pace vs Game Flow (Player-Centric Gamification Tips)
5. Gameplay Mechanics vs Player Mechanics (Gamification Player Progression Tips)
6. Game Physics vs Game Mechanics (Player-Centric Gamification Tips)
7. Gameplay vs Game Plot (Player-Centric Gamification Tips)
8. Level Design vs Game Balance (Player-Centric Gamification Tips)