Competition with others

1. Game Playability vs Player Playability (Gamification Player Progression Tips)
2. Achievements vs Challenges (Gamification Achievement Systems Tips)
3. Game Progression vs Game Advancement (Gamification Player Progression Tips)
4. Multiplayer vs Single-player (Gamification And Bloom's Taxonomy Tips)
5. Single-Player vs Multiplayer (Player-Centric Gamification Tips)