As a bit of context, when you used to go to the game search results and order it by 'popularity' this list order has historically been created by scraping reddit comments looking for games labeled in bold and then tracking it all and showing games in order of how many times they were mentioned over all time (since I started tracking in Dec 2018).
This was meant to be a stop gap until we had enough data to generate our own list and today is that day! We've developed our own proprietary system that uses data including game page visits, the game lists, play logs, mentions of games in comments, linking to games in forum posts, game ratings/reviews, and a few other criteria that comes into consideration for a game to get it's rank.
We spent about 3 days fine tuning the algorithm and will continue to do so over time but it feels like a great start. You'll now notice that in the search results you'll be able to see a game's rank as well as on the game's page too.
I'm currently working on creating an improved "trending" system as well as a "discover" system that we'll hopefully be launching soon!