The game engine you waited for
Godot Engine provides a huge set of common tools, so you can just focus on making your game without reinventing the wheel. Godot is completely free and open-source under the very permissive MIT license. No strings attached, no royalties, nothing. Your game is yours, down to the last line of engine code.
Alternatives for Godot Engine
|Description||Draw and interact with physical systems||The ultimate 2D game development environment||The game engine you waited for||All-in-one game engine|