Castle Game Engine vs RPG Boss
Castle Game Engine
castle-engine.ioRPG Boss
github.comSide by side
| Figure | Castle Game Engine | RPG Boss |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| Plans published | 1 | 0 |
| Spec score · Game Development Software | 8.6 (#12) | 7.0 (#41) |
| Integrations | The project lists Visual Studio Code, Lazarus, Delphi, Blender and Sketchfab among supported tools and services. | The build instructions say the Gradle project can be imported into Eclipse or another IDE. |
| License | The engine is open-source and can be used to make proprietary applications. | The repository states that RPG Boss is licensed under AGPL3. |
| Support | The maker invites questions and feedback on its forum and offers meetings with the engine lead to discuss use, bugs, feature requests and cooperation. | The project provides a GitHub wiki with user and developer guides. |
Plans
In their own words
Castle Game Engine
Castle Game Engine is a free, open-source engine for building 2D and 3D games with a visual editor and an Object Pascal API. The editor supports designing game worlds and interfaces, then building projects for multiple platforms. Listed targets include Windows, Linux, macOS, Android, and iOS, with mobile export, console export, and multiplayer tools. Graphics capabilities include shader effects, physically based rendering, shadows, mirrors, bump mapping, and post-processing. Supported formats include glTF, X3D, sprite sheets, and Spine 2D animations. The project lists Visual Studio Code, Lazarus, Delphi, Blender, and Sketchfab among supported tools and services. A command-line build tool, Docker image, and CI setup documentation support automation. The engine can be used for proprietary applications. Provided Linux binaries require GLIBC 2.34 or newer; older systems can compile from source. Supported operating systems must still receive vendor security support, with Windows 10 temporarily supported as of 2026.