How can I install MonoGame templates for Visual Studio 2013?
Assuming you want C# templates:
Install MonoGame from here
Find the Visual Studio templates folder (usually C:\Users[your user name]\Documents\Visual Studio 2012\Templates\ProjectTemplates\Visual C#)
Copy the MonoGame folder to the Visual Studio 2013\Templates\ProjectTemplates\Visual C# folder.
UPDATED 7 January 2014
For people who want to use Monogame can download the 3.2 which provide the support for 2013.
The installer are available at http://build.monogame.net/job/develop-win/lastSuccessfulBuild/artifact/Installers/Windows/
If you try this way you don't need to do any kind of copy-paste for project templates.
UPDATED 9 January 14
3.2 build have some trouble now. Check the very common issue here http://monogame.codeplex.com/discussions/467277
The Paul McCowat's answer is correct.
Also, if you doesn't have visual studio 2012 in your machine, just create the folders hierarchy as he said. (C:\Users[your user name]\Documents\Visual Studio 2012\Templates\ProjectTemplates\Visual C#) Then the Monogame installer can find the folder to copy the templates.
Update: I don't have visual studio 2012 installed in my machine, so I had some problems to resolve in this way.
I edited some files on every template I wanted to use, searching for references of DLLs of visual studio 2012, then i changed the versions of these DLLs from 11 to 12.
Now it works!
You can find a tutorial on this website. It is a github repository of the MonoGame project so the link should work as long as the framework is being developed.
You can also check out this 4-part tutorial on youtube.
http://www.youtube.com/watch?v=FYCWl2jU0zI
http://www.youtube.com/watch?v=ZedtwoL9_M0
Now Mono 3.4 can be downloaded for Visual Studio directly and the installer automatically installs the templates into Visual Studio. Installers are available here.
来源：https://stackoverflow.com/questions/18944481/how-can-i-install-monogame-into-visual-studio-2013