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Castle Game Engine
What it is
Castle Game Engine is a free, open-source engine for creating 2D and 3D games, with a visual editor and an Object Pascal API. The editor can be used to design game worlds and interfaces and build projects for multiple platforms. Listed targets include Windows, Linux, macOS, Android, and iOS, with mobile export supported. Graphics features include shader effects, physically based rendering, shadows, mirrors, bump mapping, and post-processing. The engine supports glTF, X3D, sprite sheets, and Spine 2D animations. It lists Visual Studio Code, Lazarus, Delphi, Blender, and Sketchfab among supported tools and services. Build options include a command-line tool, a Docker image, and CI setup documentation. Networking features include asynchronous URL downloads and integrations with Indy, mORMot 2, and RNL. Developers can use the open-source engine to make proprietary applications. Provided Linux binaries require GLIBC 2.34 or newer; older systems can compile from source. The maker says supported operating systems must still receive security support from their vendors, with Windows 10 temporarily supported as of 2026.
For and against
For
- Free and open source
- Targets desktop and mobile platforms
- Supports mobile export and multiplayer tools
- Can be used for proprietary applications
Against
- Object Pascal is the stated API language
- Linux binaries require GLIBC 2.34 or newer
- Older Linux systems require compiling from source
The verdict
Castle Game Engine pairs a visual editor with broad graphics, format, and platform support. Developers should check the language and operating-system requirements against their project setup.
Who it suits
Castle Game Engine suits developers working in Object Pascal who need a 2D or 3D engine targeting desktop and mobile platforms. Its editor, build tools, and listed CI setup may also suit projects with automated build workflows.
Plans and prices
Castle Game Engine
Free and open-source · may be used to make proprietary applications
Read 11 Oct 2026 · castle-engine.io
On the record
- Build automation
- It provides a command-line build tool and Docker image, with setup documentation for GitHub Actions, GitLab CI, Jenkins and Woodpecker CI.castle-engine.io · read 11 Oct 2026
- Creator
- The credits page says Castle Game Engine was created by Michalis Kamburelis.castle-engine.io · read 11 Oct 2026
- Data formats
- The engine supports glTF, X3D, sprite sheets and Spine 2D animations.castle-engine.io · read 11 Oct 2026
- Download systems
- The download page provides engine builds for Windows x86_64, Linux x86_64, Raspberry Pi Linux Arm32 and Arm64, and macOS Apple Silicon and Intel.castle-engine.io · read 11 Oct 2026
- Editor
- Its visual editor can design 3D and 2D game worlds and user interfaces, and build projects for multiple platforms.castle-engine.io · read 11 Oct 2026
- Integrations
- The project lists Visual Studio Code, Lazarus, Delphi, Blender and Sketchfab among supported tools and services.castle-engine.io · read 11 Oct 2026
- License
- The engine is open-source and can be used to make proprietary applications.castle-engine.io · read 11 Oct 2026
- Linux requirement
- Provided Linux binaries require GLIBC 2.34 or newer; users of older systems can compile from source.castle-engine.io · read 11 Oct 2026
- Mobile export
- Yescastle-engine.io · read 24 Sep 2026
- Networking
- Networking features include asynchronous URL downloads and integrations with Indy, mORMot 2 and RNL.castle-engine.io · read 11 Oct 2026
- Purpose
- Castle Game Engine is a cross-platform 3D and 2D game engine with a visual editor and Object Pascal API.castle-engine.io · read 11 Oct 2026
- Rendering
- Graphics features include shader effects, physically based rendering, shadows, mirrors, bump mapping and post-processing.castle-engine.io · read 11 Oct 2026
- Scripting languages
- Object Pascal (Free Pascal/Lazarus)castle-engine.io · read 24 Sep 2026
- Source code model
- open_sourcecastle-engine.io · read 24 Sep 2026
- 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.forum.castle-engine.io · read 11 Oct 2026
- Supported operating systems
- The engine says it is supported only on systems that still receive security support from their vendors, with Windows 10 temporarily supported as of 2026.castle-engine.io · read 11 Oct 2026
- Target platforms
- Windows,Linux,macOS,Android,iOScastle-engine.io · read 24 Sep 2026
- Windows downloads
- The maker says its Windows downloads include code-signed executables to reduce alerts from Windows protection tools.castle-engine.io · read 11 Oct 2026
