Have you looked into MonoGame (<a href="http:&#x2F;&#x2F;www.monogame.net&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.monogame.net&#x2F;</a>)? It is basically a fully open source re-implementation of the XNA framework with support for almost every major platform (iOS, Android, Windows, Windows Phone, Xbox, OS X, Linux, etc.)