# Particle Bridge ### [***The Particle Bridge is now open, convert your PGFK into xPGFK here.***](https://bridge.polyient.games/) The Particle Bridge is a purpose-built smart contract designed to facilitate the bi-directional conversion between ERC721 and ERC20 tokens. The Particle Bridge enables the creation of [**xTokens**](broken://pages/-MO4TqdiqJvoXMoDBcG6), a new fungible token standard that represents fractional NFTs. PGFK (non-fungible ERC721) and xPGFK (fungible ERC20) will be the first tokens allowed on the Particle Bridge. Users may decide to convert between token forms in order to take advantage of different rewards and benefits. The fluidity between ERC721 and ERC20 token forms enables a unique "dual state asset" - an asset that carries complimentary but different benefits in each of its forms. ### --- # 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.polyient.games/polyient-games-protocols/particle-bridge.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.