GZDoom

GZDoom is a widely used source port of the DOOM engine that enhances the original gameplay experience with modern graphics, scripting, and modding capabilities. Built on top of the earlier ZDoom project, it introduces hardware-accelerated rendering through OpenGL and Vulkan, allowing for advanced visual effects such as dynamic lighting, shaders, and high-resolution assets. The engine is highly modder-friendly, providing extensive scripting tools that enable the creation of new gameplay mechanics, total conversions, and custom user interfaces. It supports a broad range of DOOM-based games and maintains backward compatibility with many legacy mods, making it a central platform in the DOOM modding community. GZDoom is continuously updated, with a strong focus on stability, performance, and feature expansion. Its modular structure allows developers to extend the engine while preserving compatibility with existing content.