# Crypto Kingdoms Crypto Kingdom is a SLG strategy war game developed based on the blockchain technology as well as DeFi and NFT with a special focus on economic driving models. Such models require players to strategically plan their resources, heroes, gear and soldiers to maximize their gains. Players earn Green Crystals through various modes, which can be used directly in the game to improve their combat power or sold to other players for ETH and other digital assets. Heroes and gear are both NFT and can be traded freely. Green Crystals allow most players to make money while NFT offers everyone an opportunity to invest and hedge. --- # 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://whitepaper.cryptokingdoms.com/crypto-kingdoms/crypto-kingdoms.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.