PySnow 

Ash is an open source 2d game framework focused on making it instant to start developing your game.

Nez is a free 2D focused framework that works with MonoGame and FNA.

Add Gia to your Ash game to quickly roll out your ECS solution.

This pure C# flex-like UI Layout Library gives you the abstract class to extend into making your game UI manageable and flexible with very little friction and even less bias. Note: This... More information

Add Default to your Ash game to quickly roll out your EC solution.