Reward system optimization

1. Game Difficulty vs Challenge Difficulty (Gamification Player Progression Tips)
2. Skill-Based Progression vs Level-Based Progression (Gamification Player Progression Tips)
3. User Generated Content vs Developer Generated Content (Player-Centric Gamification Tips)
4. Experience Gain vs Skill Gain (Gamification Player Progression Tips)
5. Game Completion vs Player Completion (Gamification Player Progression Tips)
6. Game Physics vs Game Mechanics (Player-Centric Gamification Tips)
7. Player Behavior vs Player Interaction (Player-Centric Gamification Tips)
8. Player Feedback vs Game Feedback (Gamification Achievement Systems Tips)
9. Player Progress vs Game Progress (Gamification Player Progression Tips)
10. Rewards vs Incentives (Player-Centric Gamification Tips)
11. Reward Timing vs Reward Frequency (Gamification Achievement Systems Tips)
12. Rewards in Gamification: Achievement Vs. Cooperation (Productivity Insight)