# Creatures System With dynamic parameters updated on the blockchain leveraging the power of blockchain technology, NFTs possess parameters that can be automatically updated and recorded on the blockchain in real time. As players engage with their NFT pets, their age, health, happiness, and skill levels evolve in real-time, reflecting the genuine bond formed between player and pet. Explore additional game modules that add value to the core gameplay, where assigned NFTs can transform visually and grant advantages. Immerse yourself in Eternals' enchanting 2D art-style world, where the bond between player and pet knows no bounds! ### Thing You Must Know {% hint style="info" %} **Plasma**: This is an important metric that allows your pets to maximize your rewards & gaming experience. * Each pet has a different plasma duration based on their rarity. * The higher the rarity, the faster the rewards accumulate. {% endhint %} *What happens if your pets run out of Plasma?* > Your pets can still play Eternals and receive in-game rewards. > > *They can not participate in special missions, and receive Space Stones.* ### Genesis Pets Markets * [Eternals Website](https://www.eternals.game/pets) * [Dagora NFT Marketplace](https://dagora.xyz/collection/viction/0xD4A3639794e85160eF2e953e28eeE73a84fD9279) --- # 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://docs.eternals.game/eternia/creatures-system.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.