Balanced challenge

1. Difficulty Curve vs Learning Curve (Player-Centric Gamification Tips)
2. Player Objectives vs Game Objectives (Gamification Achievement Systems Tips)
3. Active Users vs Registered Users (Player-Centric Gamification Tips)
4. Digital Assets vs Game Assets (Gamification Achievement Systems Tips)
5. Game Completion vs Player Completion (Gamification Player Progression Tips)
6. Game Levels vs Player Levels (Gamification Player Progression Tips)
7. Game Quest vs Player Quest (Gamification Player Progression Tips)
8. Game Success vs Player Success (Gamification Player Progression Tips)
9. Learning Curve vs Difficulty Curve (Gamification Player Progression Tips)
10. Player Actions vs Player Behavior (Gamification Player Progression Tips)
11. Player Challenges vs Player Objectives (Gamification Player Progression Tips)
12. Player Data vs Game Data (Gamification Achievement Systems Tips)
13. Player Investment vs Player Commitment (Gamification Achievement Systems Tips)
14. Player Learning vs Player Progression (Gamification Player Progression Tips)
15. Player Targets vs Player Goals (Gamification Player Progression Tips)
16. Skill Acquisition vs Skill Enhancement (Gamification Player Progression Tips)