Skill-based progression

1. Skill-Based Progression vs Level-Based Progression (Gamification Player Progression Tips)
2. Player Expectations vs Player Satisfaction (Gamification Player Progression Tips)
3. Game Difficulty vs Challenge Difficulty (Gamification Player Progression Tips)
4. Player Motivation vs Player Satisfaction (Gamification Achievement Systems Tips)
5. Game Balance vs Fair Play (Gamification Achievement Systems Tips)
6. Game Progression vs Game Advancement (Gamification Achievement Systems Tips)
7. Player Skills vs Player Competencies (Gamification Player Progression Tips)
8. Game Completion vs Player Completion (Gamification Player Progression Tips)
9. Leveling Up vs Ranking Up (Gamification Player Progression Tips)