# FAQ

- [How to install MetaMask extension for your browser?](/heartcoin-whitepaper-v1.0/faq/how-to-install-metamask-extension-for-your-browser.md)
- [How to register MetaMask Account?](/heartcoin-whitepaper-v1.0/faq/how-to-register-metamask-account.md)
- [How to add Polygon network to MetaMask?](/heartcoin-whitepaper-v1.0/faq/how-to-add-polygon-network-to-metamask.md)
- [How to add USDT to Metamask on the Polygon (MATIC) Network?](/heartcoin-whitepaper-v1.0/faq/how-to-add-usdt-to-metamask-on-the-polygon-matic-network.md)
- [How to add HTC to Metamask on the Polygon (MATIC) Network?](/heartcoin-whitepaper-v1.0/faq/how-to-add-htc-to-metamask-on-the-polygon-matic-network.md)
- [How Can I buy USDT?](/heartcoin-whitepaper-v1.0/faq/how-can-i-buy-usdt.md)
- [How can I buy Heart Games NFT on Marketplace(BETA)?](/heartcoin-whitepaper-v1.0/faq/how-can-i-buy-heart-games-nft-on-marketplace-beta.md)
- [How to Swap HTC for USDT?](/heartcoin-whitepaper-v1.0/faq/how-to-swap-htc-for-usdt.md)
- [How can I buy Heart Games NFT on OpenSea?](/heartcoin-whitepaper-v1.0/faq/how-can-i-buy-heart-games-nft-on-opensea.md)
- [How to apply the NFT in-game?](/heartcoin-whitepaper-v1.0/faq/how-to-apply-the-nft-in-game.md)
- [How to Mint NFT in Game?](/heartcoin-whitepaper-v1.0/faq/how-to-mint-nft-in-game.md)
- [How to Upgrade NFT in Game?](/heartcoin-whitepaper-v1.0/faq/how-to-upgrade-nft-in-game.md)
- [How to delete your account?](/heartcoin-whitepaper-v1.0/faq/how-to-delete-your-account.md)
- [How to SWAP in-game currency for HTC?](/heartcoin-whitepaper-v1.0/faq/how-to-swap-in-game-currency-for-htc.md)