I'm playing around a little with Xamarin + CocosSharp in my free time - I'm looking at making a game, focusing on Android for now, but Xamarin allows pretty easy portability to iThings too. So far I've just got a tiled background and NPC that I'm borrowing sample tilesets from Cocos for. The player can move around in a room and pull up a menu prompt but it's pretty bare.
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