As of today, Command & Conquer titles that were released on the Xbox 360 back in the 2007-2009 period are officially available for the Xbox One as part of their backwards compatibility program. You can buy these titles from the following links, or just insert your Xbox 360 disc into your Xbox One console:
- Command & Conquer 3: Tiberium Wars
- Command & Conquer 3: Kane's Wrath (currently only the Map Pack is purchasable)
- Command & Conquer: Red Alert 3 (with Decimation Map Pack)
- Command & Conquer: Red Alert 3 - Commander's Challenge
I have inquired with Xbox Support on why C&C 3: Kane's Wrath is not listed as a separate purchase like the others are, and it seems it is still under review with no real ETA on when it will be publicly available, just to keep an eye on updates in the rest of the week. Stay tuned for more info.