Considering the long relationship Bungie had with MS, I find it odd that they'd not make a version for Windows Phone. I had high hopes that Bungie would have been one of the few developers to deliver a multiplatform game/app. Maybe there's some negative history involved, maybe it simply comes down to money, or maybe it's just Activision. I for one would just like to know why? On a side note, I enjoy my Windows Phone experience so much that I would gladly pay for a Companion App.