Got a response from kingdom rush developer iron hide games:
Thank you for contacting us.
The thing about Windows Phone is that it presents us with the exact same problem than releasing the game for PC. We would have to re-code the entire game from zero.
We originally coded Origins using native Language, and then we port it to Android. But since Microsoft and Apple don't really get along, there is no port available for iOS apps to Windows.
The only solution we have come up with is to start making games in a cross-platform language, so it can be ported everywhere. But this can only be applied to our next games.
Sorry it's not good news, but at least now you know.
We will try to release our next games in as many devices as possible.
Best wishes,
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