Check Out Steam Tags, a Boring Thing That Should Have Been Done Years Ago

Steam Tags allow you to "tag games or software in the Steam Store with terms that you think are appropriate, or apply tags that others have already suggested for that title.

Apply genres such as "Puzzle", themes like "Military", or attributes such as "Difficult". Or, come up with entirely new concepts to apply in categorizing products."

Entirely new concepts? You mean like YOLOSW4G?