Stride Game Engine – Open-Source C# Game Engine
stride3d.net
stride3d.net
Just to ask for fun though: Why would I want to use this over Unity/Unreal/Godot? I can see open source being a pretty big draw for me personally, but some people just won't care about that. What's special about Stride?
I'm sure it isn't as polished as Unity/Unreal, but it might be equivalent to Godot (which is high praise since Godot is amazing).
The fact that it is open-source and supported by the .Net Foundation seems to be the killer feature, so hopefully it will help move people off of Unity who want to stay in a cross platform engine, while still using C#.