Armory3D vs Castle Game Engine
Armory3D
armory3d.org
Castle Game Engine
castle-engine.ioSide by side
| Figure | Armory3D | Castle Game Engine |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| Plans published | 1 | 1 |
| Spec score · Game Development Software | 9.1 (#2) | 8.6 (#12) |
| Spec score · Game Engine Software | 8.7 (#22) | 8.2 (#50) |
| Free plan | Yes | Yes |
| License | The engine repository identifies the software license as zlib/libpng and permits use for any purpose, including commercial applications, subject to its stated restrictions. | The engine is open-source and can be used to make proprietary applications. |
| Mobile export | Yes | Yes |
| Purpose | Armory3D is an open-source 3D game engine focused on portability, minimal footprint and performance. | Castle Game Engine is a cross-platform 3D and 2D game engine with a visual editor and Object Pascal API. |
| Rendering | Its scriptable renderer supports deferred and forward paths, and users can create custom render paths. | Graphics features include shader effects, physically based rendering, shadows, mirrors, bump mapping and post-processing. |
| Scripting languages | Haxe | Object Pascal (Free Pascal/Lazarus) |
| Source code model | open_source | open_source |
| Support | The setup guide points users to troubleshooting documentation and the GitHub issue tracker for installation or usage problems. | The maker invites questions and feedback on its forum and offers meetings with the engine lead to discuss use, bugs, feature requests and cooperation. |
| Target platforms | Windows,Linux,macOS,iOS,Android,Web | Windows,Linux,macOS,Android,iOS |
Plans
In their own words
Armory3D
Armory3D is a free, open-source 3D game engine that works as a Blender add-on and external SDK. It targets games for Windows, Linux, macOS, iOS, Android and the web, with visual scripting and Haxe available for game logic. Its scriptable renderer supports deferred and forward paths, and developers can create custom render paths. The engine includes a UI library and editor, physics based on Bullet for rigid and soft body simulation, and an option to use Oimo. Navigation meshes support real-time pathing for objects marked as actors. Effects and animation include emitter and hair particles with GPU instancing, GPU skinning, bones, keyframes, shape keys and tilesheets. Listed lighting features include voxel-based ambient occlusion, lightmapping, area lights, reflection probes and IES textures. The setup guide asks users to install Blender 4.5.x LTS and says Blender 3.3 LTS and earlier are unsupported. The repository identifies the license as zlib/libpng and permits commercial use subject to its stated restrictions. The privacy policy says Armory software does not collect, market or sell user data.
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.