Unity - The multiplatform game creation tools for everyone.
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
GameMaker - "With GameMaker, I went from no programming knowledge to full-time developer in 2 years!" Seth Coster - Butterscotch Shenanigans - Crashlands. "GMS 2 is absolutely amazing and I cannot get over how great this software is to use".
CryENGINE - The most powerful game development platform is now available to everyone. Full engine source code.
Arkit - Discover a smarter, map-based project portfolio. Easier planning, better data management, great collaboration - Arkit gives you one intuitive system to make every day more productive.