Castle Game Engine
Castle Game Engine: A free Pascal engine with visual editing, broad platform targets, and practical build tooling. Ranked #62 of 91 in Game Engine Software by our editors (3.3/10); pricing: Free plan; best for open-source Pascal game projects.
At a glance
- Editor score3.3 / 10
- PricingFree plan
- Best forOpen-source Pascal game projects
- Free planYes
- Paid fromFree
- Source code modelOpen_source
- Facts checked24 Sep 2026
Where it wins
- Free, open-source engine with Object Pascal scripting
- Visual editor supports 2D and 3D worlds plus user interfaces
- Builds for desktop, mobile, web, and Nintendo Switch
Where it doesn't
- No dedicated high-level multiplayer components
- Node-based visual scripting is not verified
- Console export is limited to supported platforms
Our verdict on Castle Game Engine
Castle Game Engine is a free, open-source 2D and 3D game engine built around Object Pascal. It is aimed at developers creating games for Windows, Linux, macOS, FreeBSD, Raspberry Pi, Android, iOS, Web, Nintendo Switch, and Pine64. Its visual editor covers game worlds and user interfaces, while scene, camera, navigation, lighting, viewport, physics, audio, networking, and rendering systems support projects that need more than basic 2D scenes. Commercial and proprietary applications are supported under its licensing terms.
The engine’s main strength is the range of development tools included in one Pascal-focused environment. It supports glTF, X3D, Spine, and sprite sheets, along with shader effects, physically based rendering, shadows, post-processing, automatic interface scaling, rigid bodies, colliders, joints, and collision queries. Integrations include Blender, Sketchfab, Tiled, Visual Studio Code, Lazarus, Delphi, OpenAL, FMOD, and several networking libraries. Command-line build and packaging tools, Docker tooling, and integrations with GitHub Actions, GitLab CI, Jenkins, and Woodpecker CI also suit teams that want repeatable builds.
Networking is supported through HTTP requests, client-server messaging, and third-party integrations, but the engine does not provide dedicated high-level multiplayer components. That makes it better suited to developers comfortable assembling networking systems from lower-level building blocks than to teams seeking a ready-made multiplayer framework. The free, open-source model and Pascal workflow are strong reasons to choose it for open-source projects, desktop and mobile releases, or developers already working with Delphi or Lazarus. Teams wanting high-level multiplayer features or a different scripting language should consider alternatives.
Your product? Our editors can test Castle Game Engine in depth and publish a review, labelled as paid · from $149/mo →
Castle Game Engine pricing
Castle Game Engine fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Source code model | Open_source |
| Visual scripting | Not verified |
| Multiplayer tools | Not verified |
| Mobile export | Yes |
| Console export | Not verified |
| Target platforms | Windows, Linux, macOS, Android, iOS |
| Scripting languages | Object Pascal (Free Pascal/Lazarus) |
| Deployment | Desktop, Mobile |
| Platforms | Windows, macOS, Linux |
| Support | Docs, Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan |
| Website | castle-engine.io |
| Facts checked | 24 Sep 2026 |
Alternatives to Castle Game Engine
- Godot EngineA flexible open-source engine for 2D, 3D, multiplayer, and XR projects.9.2
- PlayCanvasA capable web-first engine for collaborative 2D and 3D game development.9.0
- GameMakerA focused 2D engine with free non-commercial access and wide export coverage.8.9
See all Castle Game Engine alternatives →
Also Ranked In
Castle Game Engine is ranked in 2 of our directories.
Used Castle Game Engine? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Castle Game Engine for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Castle Game Engine is listed in our Game Engine Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/castle-game-engine/"><img src="https://www.itechguides.com/best/badge/castle-game-engine.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update