BRUSH is the deflationary token utilized within the Estfor Kingdom and Paintswap ecosystems. As the native currency, it plays a crucial role in enhancing the user experience and driving engagement in both platforms. Estfor Kingdom is an immersive, fully on-chain medieval idle MMORPG hosted on the Sonic network. This free-to-play browser game offers an extensive array of features, including over 17 skills, more than 60 quests, and collectible items and pets. Players can engage in BRUSH-yielding clan wars and utilize on-chain mechanics such as a peer-to-peer item orderbook and a built-in verifiable randomness function, enriching the gameplay experience. Paintswap serves as the official Airdrop Marketplace of Sonic, boasting a total supply of 190 million tokens. It stands out as a leading NFT and fNFT marketplace, equipped with a dedicated launchpad for creators. This platform allows artists and developers to showcase and launch their digital assets effectively. A unique feature of Paintswap is its commitment to sustainability and value enhancement for BRUSH holders. Fifty percent of the fees generated from the marketplace and launchpad are allocated to buying back and burning BRUSH tokens, thereby reducing supply and potentially increasing value over time. Through these interconnected platforms, BRUSH not only serves as a medium of exchange but also plays a vital role in the overall ecosystem's growth and sustainability.