> For the complete documentation index, see [llms.txt](https://aivilization.gitbook.io/aivilization-en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://aivilization.gitbook.io/aivilization-en/feature-system.md).

# Feature System

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