Increased engagement and retention

1. Consumer vs Producer (Virtual Economy Gamification Tips)
2. Economic Impact vs Game Impact (Virtual Economy Gamification Tips)
3. Game Levels vs Player Levels (Gamification Player Progression Tips)
4. Offline Games vs Online Games (Player-Centric Gamification Tips)
5. Player Effort vs Player Reward (Gamification Player Progression Tips)
6. Player Engagement vs Player Retention (Player-Centric Gamification Tips)