Engines and their tools
Commercial Game Engines
Unreal Engine 4 Editors and Tools
Unity Editors and Tools
Amazon Lumberyard Editors and Tools
CRYENGINE Sandbox & Tools
GameMaker Studio 2 Editors
website
Free Game Engines
Godot Game Engine
Godot Engine is a feature-packed, cross-platform game engine to create 2D and 3D games from a unified interface.
source code
Blender Game Engine
The Blender Game Engine (BGE) is Blender’s tool for real time projects, from architectural visualizations and simulations to games.
source code
GDevelop
GDevelop is an open source, cross-platform game creator designed to be used by everyone - no programming skills required.
source code
Cocos Creator
Cocos2d-x is a suite of open-source, cross-platform, game-development tools used by millions of developers all over the world.