you bough TTK on xbox 360 but to be able to purchase ROI on xbox one you need to repurchase TTK again on xbox one you don't need to repurchase the TTK only if you get the collection edition. sorry but bungie need the money. [quote]Destiny: Rise of Iron Purchase and Pre-order Paths Destiny: Rise of Iron is now available for pre-order on PlayStation 4 and Xbox One consoles. Players are required to own Destiny: The Taken King in order to pre-order this content. Destiny: The Taken King is not bundled with the base Destiny game. If this expansion is purchased without owning Destiny, players may be prompted to download the Destiny Trial. Trial mode does not grant access to Destiny: The Taken King content, nor Destiny: Rise of Iron content when it is available for gameplay on September 20th, 2016.[/quote]