> For the complete documentation index, see [llms.txt](https://whitepaper.cryptoknights.games/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://whitepaper.cryptoknights.games/castles.md).

# Castles

### What is a Castle?

* **A Castle (CASTLE) is a DAO and the Knights from it are the DAO's members.**
* **Castles can be used to mint new Knights with a discount.** The discount increases based on the amount of Knights it has minted. The more Knights a Castle mints, the better the deal gets to mint a new Knight.
* **Castles can level up.** High tier Castles can even issue custom tokens. ERC20 and/or ERC721. The highest tier "Citadel" has an amount cap of 7; the 2nd highest tier "Castle" has an amount cap of 21.
* **Castles can tax its Knights.** A part of that Knight's earnings go to the Castle.
* **Knights from a Castle can have exclusive skins.** Castle art design is customized.
* **The CASTLE Smart Contract is upgradable.** They will have more features as the game developments.