# NFT Market In the Pethereum metaverse, pets are NFTs, that can be sold in the NFT market. Players can also fuse their pets with other pets or get eggs using their Pethereum Crystals. Players break these eggs, hoping for more valuable NFTs to appear. You can find detailed information about the fusion process in the [Fusion](/gameplay/fusion.md) section. NFT transactions can be made through the Pethereum Marketplace and OpenSea. A pet purchased through OpenSea can be transferred to the Pethereum metaverse. Loop Games receives a 5% royalty from all secondary sales in the NFT marketplaces. Pethereum uses the Polygon protocol, allowing players to pay low gas fees for their transactions. All transactions can be made through any wallet that supports Polygon. Recommended wallet: Metamask Pets purchased with the Pethereum Crystals earned in the game can be transferred to the wallets if desired. This process can only be done via web browsers. --- # 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.pethereum.io/gameplay/nft-market.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.