Godot Engine - Feature-packed 2D and 3D open source game engine.
microStudio - microStudio is an all-in-one online game engine that enables you to create games, develop programming skills, have fun playing what you have created, share with others, and prototype.
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
Unity - The multiplatform game creation tools for everyone.
ENIGMA – LateralGM - LateralGM is a powerful IDE for ENIGMA, and both of these combine to offer you a cross-platform game environment.
Urho3D - Urho3D is a lightweight, cross-platform rendering and game engine implemented in C++ and released...