Godot offers a free light-weight game engine for both 2D and 3D games. The dedicated 2D engine makes it easier to deliver games to players. We like the intuitive node-based system. It is fully opensource and has a growing community. We will be sharing the latest lessons for the updated version.
Godot 4.0 is boasting some impressive new features. Everything from better physics to enhanced 2D shaders.
https://godotengine.org/article/godot-4-0-sets-sail/ 
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