In-game currency systems

1. Game Scores vs Player Scores (Gamification Player Progression Tips)
2. Player Interaction vs Player Activity (Gamification Player Progression Tips)
3. Player Path vs Player Journey (Gamification Player Progression Tips)
4. Player Ranking vs Player Rating (Gamification Achievement Systems Tips)
5. Replay Value vs End Game Content (Player-Centric Gamification Tips)
6. Game Economy vs Virtual Economy (Gamification Achievement Systems Tips)
7. Game Missions vs Player Tasks (Gamification Player Progression Tips)
8. Tradable vs Sellable (Virtual Economy Gamification Tips)
9. Virtual Budget vs Game Budget (Virtual Economy Gamification Tips)