It hasn't been a big secret that Microsoft has been trying to woo iPhone developers to its own platforms. We've already seen them doing so with Windows Mobile. Now we're seeing it happen with the Zune HD.

But just how easy is it to port an app? Try 12 hours, as seen with Wordmonger in the video above.

Written in C# with OpenGL for the iPhone and ported with XNA Game Studio 3.1 for the Zune HD, the video above shows Wordmonger running on both devices. Of course, one major drawback to the Zune HD is a that it doesn't have a speaker, which is a big turn-off if you don't want to wear headphones for casual gaming. (Count me in that crowd.) Look for Wordmonger on the iPhone by Thanksgiving. No word on an actual Zune launch.

But either way, this is a sure sign that the Zune HD can and will run third-party apps — just as soon as Microsoft allows.

Redmond Pie [via TiPB - thanks, Taimur!]