Customizable avatars or characters

1. Achievements vs Trophies (Gamification Achievement Systems Tips)
2. Offline Games vs Online Games (Player-Centric Gamification Tips)
3. Economic Strategy vs Game Strategy (Virtual Economy Gamification Tips)
4. Learner Satisfaction vs Learner Performance (Gamification-Based Learning Tips)
5. Skill-Based Games vs Chance-Based Games (Player-Centric Gamification Tips)