Source Engine
Unity
Blender
Unreal Engine
RPG Maker
Godot Engine
GDevelop
Unreal Engine
Unity
Stencyl
Adventure Game Studio
MonoGame
Source Engine
RPG MakerUnity - The multiplatform game creation tools for everyone.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.