As you can follow games, I thought it would be neat to perhaps have the count of followers a game has, say, under the game on it's page.

Could also be used on the "Games" page for games with the highest follower count.

A game's number of followers can be found on the statistics tab. As for the sorting option, I don't see much benefit to it, as generally speaking the number of followers will correlate roughly linearly with active or total number of runners.