Time-limited events

1. Replay Value vs End Game Content (Player-Centric Gamification Tips)
2. Game Progression vs Game Advancement (Gamification Achievement Systems Tips)
3. Achievements vs Trophies (Player-Centric Gamification Tips)
4. Player Challenges vs Game Challenges (Gamification Achievement Systems Tips)
5. Free-to-Play vs Pay-to-Play (Player-Centric Gamification Tips)
6. Player Participation vs Player Contribution (Gamification Achievement Systems Tips)
7. Player Choices vs Player Actions (Gamification Player Progression Tips)
8. Performance Metrics vs Engagement Metrics (Gamification Achievement Systems Tips)
9. Game Unlockables vs Game Achievements (Gamification Achievement Systems Tips)
10. Game Tasks vs Game Objectives (Gamification Achievement Systems Tips)
11. Offline Games vs Online Games (Player-Centric Gamification Tips)
12. Game Completion vs Player Completion (Gamification Player Progression Tips)
13. Economic Constraints vs Game Constraints (Virtual Economy Gamification Tips)
14. Game Levels vs Player Levels (Gamification Player Progression Tips)
15. Virtual Budget vs Game Budget (Virtual Economy Gamification Tips)
16. Player Analysis vs Player Statistics (Gamification Achievement Systems Tips)
17. Economic Value vs Intrinsic Value (Virtual Economy Gamification Tips)
18. Skill Mastery vs Skill Leveling (Gamification Player Progression Tips)
19. Virtual Expenditure vs Digital Expenditure (Virtual Economy Gamification Tips)
20. Player Engagement vs Player Retention (Player-Centric Gamification Tips)
21. Player Improvement vs Player Enhancement (Gamification Player Progression Tips)
22. Player Metrics vs Game Metrics (Gamification Achievement Systems Tips)
23. Digital Assets vs Game Assets (Gamification Achievement Systems Tips)
24. Active Achievements vs Passive Achievements (Gamification Achievement Systems Tips)
25. Game Missions vs Game Tasks (Gamification Achievement Systems Tips)