GameStar Exchange is a cutting-edge platform for peer-to-peer trading of game items, gaming NFTs, and gift cards. Traders are motivated with utility tokens in a play-to-earn model to actively participate in the ecosystem by selling their goods. All transactions are securely hosted in smart contracts. Users maintain control over their assets and mitigate security risks associated with centralized management by managing their own private keys. The platform employs an encrypted chat feature that utilizes a robust encryption protocol, including 256-bit symmetric AES encryption, RSA 2048 encryption, and Diffie-Hellman secure key exchange protocol. Additionally, GameStar Exchange signs all chat messages with an on-chain private key to timestamp messages and ensure the integrity of the exchanged information. The platform also supports multi-chain transactions, leveraging Polkadot, enabling users to seamlessly convert assets across BTC, ETH, and BSC chains while avoiding excessive transaction fees.