Castle Game Engine vs Clickteam Fusion 2.5

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.

Clickteam Fusion 2.5 is a visual development tool for creating 2D games and applications. Its Event Editor represents behavior as conditions and actions in a grid, while the Frame Editor is used to position objects. A graphics editor, library graphics, and support for importing common file formats provide ways to work with visuals. The product integrates the Box2D physics engine into movement properties for most objects. Listed export targets include Windows, HTML5, Flash, iOS, Android/OUYA, and XNA, with some requiring optional modules. The free edition supports creating and publishing HTML5 games and apps without royalties, although its HTML5 export is limited. Its free-edition page lists Windows 10, 8.x, 7, Vista, or XP Service Pack 3 and says an internet connection is required for installation, updates, and downloads. The Free Edition costs nothing. Fusion 2.5 (PC) costs $99.99, paid once, and the Developer edition for PC costs $399.99, paid once. Commercial games and apps made with the standard PC edition must include a “Created with Fusion” logo.