Missing game in game library/ please help to find

If you bought it in 2012, then that would have been the 360 version of the game, which is not backwards compatible with the Xbox One.

You can view all games that are backwards compatible at https://www.xbox.com/games/backward-compatibility and the 360 version of Skyrim is not backwards compatible.

Is it possible someone else had your console set as your Home at that time that would have had the games as well?

I would have to respectfully disagree as I vividly remember playing this game years later on my Xbox One. It was backwards compatible. There are even other games bought prior to Skyrims release and the Xbox One release that are still in my library today. This game and, upon investigation, State of Decay are the only two purchased games missing. It wasn't too many years back I revisited this game and it's DLCs on my Xbox One because I remember spending countless hours just building houses. And no, this wasn't through Game Pass either. I also remember it showing in my game library forever, on the Xbox One before revsiting. So I ask, where did my game go?

Hello, MrArtanis. Thanks for reaching out. I'm Lucas, an Independent Advisor and a Microsoft user just like you. I'll be glad to help you out.

Microsoft Flight Simulator was added to cloud gaming on Xbox consoles, so it should appear to you.

Are you trying to find it through the Game Pass library? Xbox > My games & apps > See All > Full library > Xbox Game Pass?

Try finding the game through the Game Pass library without searching for it. If you still can't find the game, please let me know.

Yes, I've installed it, but it dosen't seem to 'auto-detect' it - I can't find any option to add a previously bought game to the library.

Or am I missing something?