Bevy vs Impact.js
Bevy
bevy.orgImpact.js
impactjs.comSide by side
| Figure | Bevy | Impact.js |
|---|---|---|
| Price from | $5/mo | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 10 | 1 |
| Spec score · Game Engine Software | 9.3 (#2) | 7.9 (#63) |
| Free plan | Yes | Yes |
| Integrations | The community asset directory lists third-party plugins and integrations, including Steamworks SDK, egui, and SpacetimeDB integrations. | The Ejecta page lists Game Center, gamepad, in-app purchases, iAds and image picker integrations or APIs. |
| Mobile export | Yes | Yes |
| Scripting languages | Rust | JavaScript |
| Source code model | open_source | open_source |
| Support | The Bevy community page links to GitHub for issues and contributions, a Bevy Q&A site, and a Discord community. | The maker directs programming questions to the forums and IRC channel, and says forum questions are often answered faster than email. |
| Target platforms | Windows,macOS,Linux,Web,iOS,Android | web,iOS,Android,tvOS |
Plans
Bevy
- Bevy EngineFree
- Bronze$5 a month
- Silver$10 a month
- Gold$25 a month
- Platinum$50 a month
- Titanium$100 a month
- Diamond$250 a month
- Corporate Bronze$500 a month
- Corporate Silver$1,000 a month
- Corporate Gold$2,000 a month
In their own words
Bevy
Bevy is a free, open-source game engine built in Rust for 2D and 3D games, visualizations, interfaces, and other graphical applications. It uses a custom Entity Component System, with components represented as Rust structs and systems as Rust functions. The engine includes 2D and 3D rendering, a composable render graph, skeletal and morph-target animation, scene loading, hot reloading, UI, and audio playback. Its 2D renderer supports sprites, texture atlases, cameras, materials, custom shaders, and render pipelines. The 3D renderer includes lights, shadows, meshes, materials, cameras, and glTF loading. The ECS-driven UI framework uses flex-box layout and can be composed in code or scenes. Scene changes can update running applications; hot reloading currently covers scenes, textures, and meshes. Bevy targets Windows, macOS, Linux, web, iOS, and Android, and is available through crates.io with cargo add bevy. Users choose MIT or Apache 2.0 licensing, with no license fees or sales cuts. It remains in development, with possible missing features, sparse documentation, and breaking API changes about every three months.