irrlicht - This caused the Irrlicht homepage and forum to work badly. Over the last days most things started working again – except the forum continues to be broken. Old posts can be read but everything else is currently not working.
Castle Game Engine - An open-source 3D/2D game engine for ObjectPascal.
Unity - The multiplatform game creation tools for everyone.
Open 3D Engine - Open 3D Engine is an open-source 3D game development engine in real-time.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.