Level progression

1. Skill Progression vs Level Progression (Gamification Achievement Systems Tips)
2. Farming vs Grinding (Virtual Economy Gamification Tips)
3. Player Roles vs Player Classes (Gamification Achievement Systems Tips)
4. Learning Curve vs Difficulty Curve (Gamification Player Progression Tips)
5. Storytelling vs Narrative (Gamification And Bloom's Taxonomy Tips)
6. Game Design vs Game Mechanics (Gamification Achievement Systems Tips)
7. Game Scenario vs Game Situation (Gamification Achievement Systems Tips)
8. Skill Levels vs Player Levels (Gamification Player Progression Tips)