It's simple, list all the games you have in the order of your most favorite to least favorite. For me it goes...
[b]Xbox One[/b]
Borderlands: The Handsome Collection
Fallout 4
The Division
Gears of War: Ultimate Edition
Destiny
Call of Duty: Black Ops 3
Sunset Overdrive
Lords of the Fallen
[b]Xbox 360[/b]
Fallout 3
Borderlands
Gears of War 2
Dead Space
Fable 2
Gears of War 3
Plants vs. Zombies
Gears of War: Judgment
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Too many games to list