I have alot of Steam Games.
Here is what I have done. I went into steam and made sure to have a shortcut for each created to my desktop. I then put all of those icons into a folder and then i simply moved that folder to another so that they would all be under something like:
C:\Steam Game Icons
I just then created a custom sized portal right on the desktop to that folder. That way I can have all of my Steam Games in a folder of their own.
Alternatively, you could just have all of Steam Game icons directly on your desktop, create a custom fence, then just select them and drag them into it.
I have 3 monitors and I have alot of games, So I used the pages feature to leave myself plenty of space on my main desktop, then all i do is go to the left page and all of my game icons are taking up all of my monitor.
I apply the same principle to another Page I have when I move Right, off the main page and then all of my Show, Movies and Media files are listed in separate Portals.
I hope I understood correctly and that my suggestion helps