Achievement rewards

1. Game Storyline vs Game Scenario (Gamification Achievement Systems Tips)
2. Tradable vs Sellable (Virtual Economy Gamification Tips)
3. Game Scores vs Player Scores (Gamification Player Progression Tips)
4. Player Transactions vs In-Game Transactions (Virtual Economy Gamification Tips)
5. Consumer Behavior vs Player Behavior (Virtual Economy Gamification Tips)
6. Economic Incentives vs Game Incentives (Virtual Economy Gamification Tips)
7. Virtual Resources vs Game Resources (Virtual Economy Gamification Tips)