# Conversion method Every warrior NFTs in Metarrior is unique. Unlike other NFT games, we give out several free non-NFT warriors for all players at the beginning of the game to let them join freely. These free warriors are default to all players. Thanks to this, players can enjoy the game and gain tokens while playing. Besides, since these free warriors are not unique, players can only use them in PvE campaign mode. And all token earning from free s will be locked and they can only convert these tokens into main NFTs when the amount of token speculated by them has reached the requirement. When users own warrior NFTs, they can freely trade and access all game functions. This design will solve the problem of high initial cost for players and let Wasted Lands be an actual Free-to-play game. --- # 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://docs.metarrior.com/game-economy/f2p-to-p2e-model/conversion-method.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.