# Feature System

- [Personal System](/aivilization-en/feature-system/personal-system.md)
- [Items and Backpack System](/aivilization-en/feature-system/personal-system/items-and-backpack-system.md)
- [Backpack](/aivilization-en/feature-system/personal-system/items-and-backpack-system/backpack.md)
- [Items](/aivilization-en/feature-system/personal-system/items-and-backpack-system/items.md)
- [Log System](/aivilization-en/feature-system/personal-system/log-system.md)
- [Diary System](/aivilization-en/feature-system/personal-system/diary-system.md)
- [Passport](/aivilization-en/feature-system/personal-system/passport.md)
- [Friend System](/aivilization-en/feature-system/personal-system/friend-system.md)
- [Health System](/aivilization-en/feature-system/personal-system/health-system.md)
- [World System](/aivilization-en/feature-system/world-system.md)
- [Map System](/aivilization-en/feature-system/world-system/map-system.md)
- [Leaderboard System](/aivilization-en/feature-system/world-system/leaderboard-system.md)
- [Price System](/aivilization-en/feature-system/world-system/price-system.md)
- [Career System](/aivilization-en/feature-system/world-system/career-system.md)
- [Learning System](/aivilization-en/feature-system/world-system/learning-system.md)
- [Dialogue Module](/aivilization-en/feature-system/world-system/dialogue-module.md)
- [Event System](/aivilization-en/feature-system/world-system/event-system.md)