Aavegotchi is a DeFi-enabled crypto collectibles game developed by Singapore-based Pixelcraft Studios that allows players to stake Non-fungible tokens (NFTs) avatars with interest-generating tokens and interact with the Aavegotchi metaverse. It is a unique combination of Decentralized Finance (DeFi) and NFTs.
Aavegotchis are pixelated ghosts living on the Ethereum blockchain, backed by the ERC-721 standard. Their value is determined by rarity level, which is calculated via multiple factors, such as base traits, amount of staked collateral/aTokens, and equipped wearables.
You can learn more about Aavegotchi on their official wiki.
https://blog.aavegotchi.com/introducing-the-gotchiverse-game-bible/
https://blog.aavegotchi.com/the-gotchiverse-game-bible-chapter-2/
https://blog.aavegotchi.com/gotchiverse-bible-chapter-3/