How to get a game on windows phone that i already paid for on xbox live?

I bought the impossible game on Xbox live and I want to get it on my windows phone. I've asked twice if this is possible and people said yes but gave no explanation how. So im asking how?!|||There鈥檚 an easy way to check your complete download history鈥攔ight from your PC鈥攁nd quickly reinstall something you鈥檝e accidentally ditched. Go to My Phone, sign in with the same Windows Live ID you used on your phone, and then click Account. Below the Personal Info section, you鈥檒l see everything you鈥檝e picked up from Marketplace, organized by date. This list also comes in handy if you ever have to replace or reset your phone.|||I don't know