# Crystals Yomi Gardens Crystals are premium tokens for the game. It can be purchased inside the game, and can also be earned by completing in-game milestones and other tasks. Crystals are not crypto tokens, but may later be exchanged for a separate on-chain fungible token on an external website. Another way to think about Crystals is that it works similarly to other mobile games' premium currency, except that it's liquid and tradable. Crystals will be needed to progress through various parts of the game or will make some parts easier, but Yomi Gardens will remain free-to-own and is intended to be enjoyed by everyone, at all stages of the game. Players will not require any special crypto knowledge or register for a crypto wallet to earn or use Crystals. Our proprietary [backend technology](https://yomi-games.gitbook.io/yomi-gardens/game-economy/tokenomics/broken-reference) will make this process seamless for all players, if and when they decide to exchange Crystals for a crypto token equivalent later. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://yomi-games.gitbook.io/yomi-gardens/game-economy/tokenomics/crystals.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.