Google's Zone 120 has created a free 3D game builder by drag-and-drop

Game Builder uses a visual map-based drag-and-drop programming system that requires no code. However, if you want to go to a higher level, you can create your own maps in Javascript. You can use thousands of 3D models when creating characters. And the tool is collaborative: several users can create or play games simultaneously. Google hopes everyone will like it, whether they're experienced or experienced game designers, and explain that you can combine a game in 10 minutes or spend hours. You can find Game Builder on Steam for PC and Mac.