I have bought Dark Souls: Prepare to Die Edition through steam. It required me to create a xbox live account, which is the one I'm currently using here. I began playing and all seemed well. I bought a xbox 360 and tried to buy/download dark souls to it, but no option to buy or download appears on the game description, I can only buy/download the Artorias of the Abyss complement. I'm using the same account I used to play on pc, so I don't know how to buy/download the game, as no download button appears, no error messages either, and I can't seem to find it in my games list of anything of the sort.