# Earning Mechanism #### Trading World War 4 opens a marketplace for players to trade their NFTs with others. You can easily buy one from the marketplace to start a combat. The NFTs will have no standard prices because it depends on the level, appearance, race, and combat power of the NFT. Players also can find and purchase other game items to boost their NFTs’ strength. #### Renting The marketplace is not only for trading but also for rent. Players can rent out their NFT from others for profit. The rental price will depend on the NFTs' value in the market. **Cartridge box** By opening the cartridge box, players can receive valuable NFTs if they are lucky enough. Playes also have option to sell box immediately for Token #### Reward Players can earn the token via Combat gameplay --- # 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://world-war-4.gitbook.io/welcome-to-gitbook/ww4-economy/earning-mechanism.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.