Bevy is a refreshingly simple data-driven game engine built in Rust. It is free and open-source forever!
Bevy is still in the early stages of development. Important features are missing. Documentation is sparse. A new version of Bevy containing breaking changes to the API is released approximately once every 3 months. We provide migration guides, but we can't guarantee migrations will always be easy. Use only if you are willing to work in this environment.
Documentation book here
Cheat book: https://bevy-cheatbook.github.io/
This book aggregates a lot of community wisdom that is often not covered by official documentation, saving you the need to struggle with issues that others have figured out already!