Castle Game Engine vs Roblox Studio

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.

Roblox Studio is a free 3D development environment for building, scripting, testing, and publishing Roblox experiences on Windows and macOS. Its drag-and-drop tools place, move, rotate, texture, and refine objects in worlds. A script editor provides syntax highlighting, code completion, and inline documentation. Device emulation and playtesting let creators check experiences across screen sizes and form factors. The built-in Assistant can answer questions, update a project’s data model, modify scripts, generate materials and textures, and automate bulk actions. Real-time collaboration and group access controls support shared work on projects and assets. The Creator Store provides models, meshes, images, sounds, videos, and plugins. Open Cloud supplies REST APIs for games, servers, data stores, restrictions, and other Roblox resources, with API keys and OAuth 2.0. The free plan costs nothing and requires a Roblox account.