Just a few minutes ago I submitted the ad-supported version of Star Ninja to the Windows Phone 7 Marketplace. Hopefully it will get through certification quickly!
It's the same game as the original, except it has been updated for Mango to support fast task switching and of course it has some ads. The ads are only shown during the pause menu and in between levels where there is a brief delay before continuing the game. I hope people are happy with how it is set up. I've had a good time play testing the game again and I hope this makes it possible for more people to experience the game. I believe the ads are pretty unobtrusive and the game itself is fun, really! There's no reason not to grab it if you have a Windows Phone, so I hope you check it out sometime.