Godot is a fully featured, open source, MIT licensed, game engine. It focuses on having great tools, and a visual oriented workflow that can export to PC, Mobile and Web platforms with no hassle. The editor, language and APIs are feature rich, yet simple to learn, allowing you to become productive in a matter of hours.
Godot was not always called Godot, it went through many (horrible) names, and (horrible) faces. Dare to pass and see the horror by yourself.
Writing a game engine is a really difficult process which takes a long time and we realize a life is not enough to add every single feature we'd like to it.