The irrLicht is a cross-platform, open-source, 3D graphics engine written in C/C++. It runs on the platform of windows, Solaris, MacOS and Linux. IrrLicht was developed by single developer Nikolaus Gebhardt in 2002. After its first release, the company was expanded up to ten developers. Its four versions have been released till 2007. It is used to develop 3D and 2D applications such as games or scientific visualizations.
HPL is a cross-platform, open-source, in-House game engine written in C++. It also uses script language Angel Script that is similar to C/C++ language. It develops games for the platforms of Linux, Microsoft Windows and Mac OS and released by Frictional Games.
Horde3D is small, open Source and cross platform game engine. This 3D rendering engine is written in C++. It targets the platform of Windows, Linux and Mac OS X. Its C-style exposed API interface allows user to use it from any language possible with less effort. It thus, offers the bindings to C#, Java, Python, Lua, Go and many other languages.
HeroEngine is 3D game Engine. It is a platform for all-in-one development to make and operate online games. It is written in C++, C# and HeroScript Language (HSL) and used to develop games for the platform of Microsoft Windows. HeroEngine was developed by Simutronics Corporation for the game Hero’s Journey; however the game was never released.
Gold Source also named as GoldSrc is a powerful 3D game engine of its time. It is written in C/C++ and mainly used for modding (modifications in code) with its mod development tools. The engine is used to develop games for windows, Playstation 2, Mac OS, Linux and Dreamcast.
GoldBox is a Propriety Game Engine developed by SSI (Strategic Simulation Inc.) in 1988. This engine is written in C/C++ but its initial version was written in Assembly and PASCAL. It developed games for the platforms of Apple II, Apple Macintosh, Amiga, Commodore 64, Atari ST, DOS, NES, NEC PC-9800, and Sega Genesis.
Godot is a cross platform free and open source game engine with MIT (a light license) licensing. It is written in C++ and C# and used to develop 2D and 3D games. The development environment runs on Windows, MacOS and Linux and develops games for platforms like windows, Linux, macOS, iOS, Android, HTML5, WebAssembly and Xbox One.
Gameplay 3D is a Cross-platform game engine used to develop 2D and 3D games. Written in C++, this is used to develop games for Windows, Android, Linux, Blackberry, iOS and MacOSX. The game engine supports Visual Studio, Xcode, CMake, Qt Creator and Android NDK platforms to develop and build the platform.
G3D Innovation Engine is a fully featured, cross platform game engine. This is a 3D engine written in C/C++. It is a commercial-grade, open source engine for different platforms i.e. Windows, Linus and Mac OS. The engine is licensed under BSD-2 license and mainly used for teaching purpose.
