XNA alternative [duplicate]

I recently switched to VS2012, managed to get XNA4 project working, but then I was wondering if VS2012 no longer supports (so really) and XNA seems to be such abandoned stuff, if there is an alternative to use, that is like:

vs2012 compatible, and net4.5, c#
not too high level (or well written and optimized)
easy to learn after XNA
free

Priorities are from above.

You could look into monogame

http://www.monogame.net/

It's based on Mono so it's easier to port across from Desktop/Windows Phone like XNA would allow to also compile for Android and iOS (you need to buy a licence for those as they use Monodroid and monotouch components which aren't free)