Dragon Age: Origins Ultimate Edition
In my experience, it's a yes and a no. Xbox 360 should be fine, just server issues. Xbox one takes more work. Step 1: install disk 2- game and dlc. Step 2: only uninstall the actual game(go into manage game and just uninstall the game). Step 3: put in disk 1, which installs the base game, and installs the update again. Step 4: take disk 1 out, put in disk 2 and run the game. Disk 2 will active the dlc and will allow you to use them. Playing with disk 1 does nothing for the dlc on Xbox one and you'll need to do this all over again. I hope it works for you as it did for me!
Yes. The game is back compatible and I'm playing it on my Xbox One right nown