> For the complete documentation index, see [llms.txt](https://crystals-1.gitbook.io/crystals-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://crystals-1.gitbook.io/crystals-docs/intro.md).

# INTRO

- [What is The Crystals?](https://crystals-1.gitbook.io/crystals-docs/intro/what-is-the-crystals.md)
- [What do I need to play ?](https://crystals-1.gitbook.io/crystals-docs/intro/what-do-i-need-to-play.md)
- [Game Contents](https://crystals-1.gitbook.io/crystals-docs/intro/game-contents.md)