# Resources

There are 3 core **Resources** utilized within the House of Titans ecosystem. These **Resources** are **Food**, **Gems**, and **Eyeballs** that each serve separate purposes outlined in their respective sub-pages.  **Resources** can be earned through completing **Missions**.  Higher-difficulty **Missions** award higher **Reward Yield**.  

* [**Food**](https://app.gitbook.com/o/aXr2WKYoHpoOk0MGhWsS/s/9TVL9RLMb8eaTlIXjFYA/~/changes/39/gameplay-loop-and-systems/resources/food)
* [**Gems**](https://app.gitbook.com/o/aXr2WKYoHpoOk0MGhWsS/s/9TVL9RLMb8eaTlIXjFYA/~/changes/39/gameplay-loop-and-systems/resources/gems)
* [**Eyeballs**](https://app.gitbook.com/o/aXr2WKYoHpoOk0MGhWsS/s/9TVL9RLMb8eaTlIXjFYA/~/changes/39/gameplay-loop-and-systems/resources/eyeballs)