Consider making this inherit GameWindow

[Shadowblitz16]

Consider making this inherit GameWindow. Maybe call it ImGuiWindow.

public class Program : ImGuiWindow
{
    public override void OnGui()
    {
        ImGui.Begin()

        ImGui.End()
    }
}

[NogginBops]

I will not be doing this. This sample is meant to be an easy plug and play class that you can just add to your existing project and get going. I see no value doing this myself over users implementing this themselves if they want to.