Open-world environments

1. Player Agency vs Player Control (Gamification Achievement Systems Tips)
2. Sandbox Games vs Linear Games (Gamification And Bloom's Taxonomy Tips)
3. Gameplay vs Game Plot (Player-Centric Gamification Tips)
4. Player Choice vs Player Freedom (Player-Centric Gamification Tips)
5. Power-Ups vs Boosters (Player-Centric Gamification Tips)