What is odd about the titling here is sticking the article in front of the subtitle. You mentioned The Sims 3 in your first post and that would be Sims 3, The. Now if you were to enter a Sims 3 listing with a subtitle the VGCollect style guide asks that you write The Sims 3 in the same way and then add the subtitle (ex. Sims 3, The: University Life). To me that's odd, and I'm not sure what the thinking is behind that but maybe someone else can explain the reason for it. I'm not sure if I've inquired about it before and if I did it would have been more than three years ago, and my memory isn't good enough to remember. If you were writing out a list on your own and wanted to remove the article from the front you'd want to write Sims 3: University Life, The.
The reason why "the" comes after the game and before the subtitle is so that the base game comes before all the expansions. For example:
Sims 3, The
Sims 3, The: 70's, 80's and 90's Stuff
Sims 3, The: Pets
Sims 3, The: University Life
vs
Sims 3: 70's, 80's and 90's Stuff, The
Sims 3: Pets, The
Sims 3, The
Sims 3: University Life, The
Hope that helps explain it!