World-building elements

1. Level Design vs Game Balance (Player-Centric Gamification Tips)
2. Quests vs Missions (Gamification Player Progression Tips)
3. Cutscenes vs Gameplay Sequences (Player-Centric Gamification Tips)
4. Game Characters vs Game Avatars (Gamification Achievement Systems Tips)
5. Game Scenario vs Player Scenario (Gamification Player Progression Tips)
6. Game Teaser vs Game Trailer (Player-Centric Gamification Tips)