Adventure Game Studio - Adventure Game Studio provides the tools to make your own adventure, for free!
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.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Wick Editor - The Internet's free and open-source creation toolkit.
ZBrush - ZBrush is a digital sculpting and painting software solution.