MonoGame already supports installing templates from the official installer
This works for all IDEs that support .net core (which is pretty much anything up to date nowadays). Use this if you can't get any other methods to work.
Install the latest .net core sdk. Run the following command:
dotnet new --install "MonoGame.Templates.CSharp"
This will install the template into dotnet (NOT your IDE). Create a new project with the following:
dotnet new mgdesktopgl -o MyCoolProject
Install the templates for VS2017, then copy them from
%UserProfile%\Documents\Visual Studio 2017\Templates\ProjectTemplates\Visual C#\MonoGame
to
%UserProfile%\Documents\Visual Studio 2019\Templates\ProjectTemplates\Visual C#\MonoGame
Alternatively, use dotnet to create projects (just installing the templates from dotnet will not make them show up in
VS, you need to create the project from dotnet).
Install the templates via dotnet (see above), once the template is installed it should be selectable from the Rider
new project wizard.
MonoGame already supports installing templates from the official installer
I don't believe there is a supported version of the MonoGame plugin, use dotnet (see above, just installing the templates from
dotnet will not make them show up in VS, you need to create the project from dotnet).