When recommending games, display the median or average game play time from players. If I am usually into indie games that take 2 hours, I'm probably less likely to be into a game that most player have >200 hours in. Conversely, if I'm sinking 500 hours into a Civ game, and most people playing RimWorld also have 500 hours in it, then that's a helpful thing to know.
Displaying the average and median game play times on the store page would be helpful as well.