Community Manager@Epicbigfoot If you own the game, it should indeed be in your library. I checked a couple of accounts to test it. BF 3 I see in my library so when you search it in the store, there should be an option under manage the game to "add to library" You can do this with games that have not been released yet as well.
The same should work with the Sims however, with the age of the game itself, if there is not an option to add it, it hasn't been integrated yet. We can certainly pass that along to the team for you though.
It seems like I don't have that option with either of the games.
